diff --git a/restoration/source410/BT/MECH.CPP b/restoration/source410/BT/MECH.CPP
index aefc563c..dd544bbe 100644
--- a/restoration/source410/BT/MECH.CPP
+++ b/restoration/source410/BT/MECH.CPP
@@ -87,6 +87,9 @@ const Receiver::HandlerEntry
 	Mech::MessageHandlerEntries[] =
 {
 	MESSAGE_ENTRY(Mech, TakeDamage),
+	MESSAGE_ENTRY(Mech, RealMaxSpeed),
+	MESSAGE_ENTRY(Mech, SetBurningState),
+	MESSAGE_ENTRY(Mech, ClearBurningState),
 	MESSAGE_ENTRY(Mech, DuckRequest)
 };
 
@@ -308,6 +311,9 @@ Mech::Mech(
 	defaultStateRequests	= 0;	// the streamed mode-request counters
 	gimpLeftRequests		= 0;	// (binary ctor @004a1674 zeroes
 	gimpRightRequests		= 0;	// +0x334/+0x338/+0x33c)
+	realMaxSpeed			= 0.0f;	// the 0x15 share triplet (+0x7a0/4/8)
+	realMaxSpeedKnown		= 0;
+	realMaxSpeedSent		= 0;
 	collisionVolumeState.Initialize(2);
 	collisionVolumeState.SetLevel(1);
 	standingVolumeHeight	= 0.0f;
@@ -855,6 +861,70 @@ void
 	}
 }
 
+//
+//#############################################################################
+// RealMaxSpeedMessageHandler -- binary @0049f604 (authentic name from the
+// handler table).  Adopt the streamed real max speed only while our own is
+// unknown.  The wire shape is the entity-stream family: 12-byte header,
+// sender EntityID at +0xc (stamped by Entity's network send @0041f640),
+// reserved pair, payload at +0x1c.
+//#############################################################################
+//
+void
+	Mech::RealMaxSpeedMessageHandler(Receiver::Message *message)
+{
+	Check(this);
+	Check_Pointer(message);
+
+	if (realMaxSpeedKnown == 0)
+	{
+		realMaxSpeed = *(Scalar *)((char *)message + 0x1c);
+	}
+}
+
+//
+//#############################################################################
+// SetBurningStateMessageHandler -- binary @0049f674.  The burning wreck is
+// parked in a per-host off-field slot: x = localHostID x 10000, y =
+// localHostID x -1000 (the data words @0049f6fc/@0049f6f8; the id read is
+// HostManager::GetLocalHostID -- the accessor the entity-instance dispatch
+// compares against ownerID), z untouched.  The mode alarm drops to 2 --
+// BURNING, the second InDeathTransition state (its missing writer, found)
+// -- the position dirty mark fires, and execution is forced back on so the
+// state runs even on a DontExecute replicant.
+//#############################################################################
+//
+void
+	Mech::SetBurningStateMessageHandler(Receiver::Message *message)
+{
+	Check(this);
+
+	HostID
+		local_host = application->GetHostManager()->GetLocalHostID();
+	localOrigin.linearPosition.x = (Scalar)local_host * 10000.0f;
+	localOrigin.linearPosition.y = (Scalar)local_host * -1000.0f;
+	localToWorld = localOrigin;
+	SetSimulationState(2);
+	ForceUpdate(1);
+	AlwaysExecute();
+}
+
+//
+//#############################################################################
+// ClearBurningStateMessageHandler -- binary @0049f700: back to
+// DefaultState, dirty the position, re-arm execution.
+//#############################################################################
+//
+void
+	Mech::ClearBurningStateMessageHandler(Receiver::Message *message)
+{
+	Check(this);
+
+	SetSimulationState(0);
+	ForceUpdate(1);
+	AlwaysExecute();
+}
+
 //
 //#############################################################################
 // The collision-volume swap (binaries @004ac04c / @004ac064): write the
diff --git a/restoration/source410/BT/MECH.HPP b/restoration/source410/BT/MECH.HPP
index d264dc67..1ff405e0 100644
--- a/restoration/source410/BT/MECH.HPP
+++ b/restoration/source410/BT/MECH.HPP
@@ -958,8 +958,28 @@
 		int						gimpLeftRequests;
 		int						gimpRightRequests;
 
+		//
+		// The real-max-speed share (binary +0x7a0/+0x7a4/+0x7a8).  +0x7a0
+		// is the base every throttle command snaps to (5 notches, master
+		// perf head).  A mech that has COMPUTED its own value (+0x7a4 set;
+		// that writer is still undecoded) sends it once over the wire
+		// (message 0x15, payload at byte 0x1c; latch +0x7a8) and ignores
+		// incoming shares; anyone else adopts the streamed value (handler
+		// @0049f604).  The send rides the EntityManager stream path
+		// (@0041f640) -- staged with the ForceUpdate/update-record feed.
+		//
+		Scalar					realMaxSpeed;
+		int						realMaxSpeedKnown;
+		int						realMaxSpeedSent;
+
 		void
 			DuckRequestMessageHandler(Receiver::Message *message);
+		void
+			RealMaxSpeedMessageHandler(Receiver::Message *message);
+		void
+			SetBurningStateMessageHandler(Receiver::Message *message);
+		void
+			ClearBurningStateMessageHandler(Receiver::Message *message);
 		void
 			SetStandingCollisionVolume();	// binary @004ac04c... see .CPP
 		void
diff --git a/restoration/source410/BT/MECH4.NOTES.md b/restoration/source410/BT/MECH4.NOTES.md
index f82b9a6a..67f2ea3d 100644
--- a/restoration/source410/BT/MECH4.NOTES.md
+++ b/restoration/source410/BT/MECH4.NOTES.md
@@ -282,3 +282,38 @@ advance dispatch death-guarded.  SIDE EFFECT: `Mech::InDeathTransition`
 and the camera director's cut-away are now LIVE (mode 9 is finally
 written on kills) -- the director path needs a rig eyeball when a pod is
 back.
+
+## 5.3.122 -- the message roster fills (three of the six landed)
+
+Landed: **RealMaxSpeed** (@0049f604: adopt streamed +0x7a0 while +0x7a4
+clear; wire payload at +0x1c, sender EntityID stamped at +0xc by Entity's
+network send @0041f640 = {stamp id, msg+0x14 <- entity+0x194, EntityManager
+(app+0x30) send @00434ea0}), **SetBurningState** (@0049f674: park the wreck
+at (localHostID x 10000, localHostID x -1000) -- constants @0049f6fc/f8,
+host id = HostManager::GetLocalHostID, THE accessor the instance dispatch
+compares against ownerID -- then MODE 2 = BURNING, the second
+InDeathTransition state's missing writer, + ForceUpdate(1) +
+AlwaysExecute), **ClearBurningState** (@0049f700: mode 0 + same pair).
+simulationFlags bit 1 == DontExecuteFlag (SIMULATE.HPP) -- the binary's
+`&= ~2` IS AlwaysExecute().
+
+Still to land from the roster:
+
+* **BalanceCoolant @0049f728** (decoded): if payload > 0, mark item+0x1d0=1
+  across the mech+0x7cc roster, then the redistribute pass @0049f788: total
+  the marks, per item fraction = mark/total (0.0 @0049f850 when empty),
+  blip the item's alarm at +0x1dc (level 2 if fraction <= stored else 1,
+  then 0 -- the gauge flash), store fraction at item+0x15c.  BLOCKED ON:
+  identifying the mech tail chain triple +0x7ac (legs -- the mobility
+  scan) / +0x7bc / +0x7cc (coolant holders) against our capability chains
+  -- @004aefa4 walks all three plus the plug at +0x590 to collect the
+  coolant set, so decode that fn to pin them.
+* **EjectPilot @0049f854** (head read): gated on payload > 0 AND
+  **mech+0x414** -- THE EFFECTIVENESS-CENSUS CONSUMER FOUND: you can only
+  eject a CRIPPLED mech (@0049fa1c's weapons/coolant/generator/limp
+  census) -- and !InDeathTransition; notifies via an app+0x2c accessor
+  (@00429078) + app+0x20 vcall (score/event, code 5, ownerID +0x18c);
+  sets **MODE 10 = EJECTED** (which is WHY IsMechDestroyed tests >= 9:
+  9 killed, 10 ejected); then builds a large effect/explosion struct --
+  tail still unread.  Mode roster now: 0 default, 2 burning, 3/4 gimp
+  L/R, 5-8 falls, 9 killed, 10 ejected; writers of 5-8 still open.