diff --git a/restoration/source410/BT/MISLANCH.CPP b/restoration/source410/BT/MISLANCH.CPP
index 6d2ab606..565bdf58 100644
--- a/restoration/source410/BT/MISLANCH.CPP
+++ b/restoration/source410/BT/MISLANCH.CPP
@@ -43,11 +43,23 @@ Derivation
 		"MissileLauncher"
 	);
 
+//
+// The shared data must carry the WEAPON tables, not Subsystem's -- a
+// MissileLauncher publishes no attributes or handlers of its own, so it
+// chains MechWeapon's exactly as ProjectileWeapon (its own base) does.
+// Wired to Subsystem's, EVERY weapon attribute on a launcher resolved to
+// nothing: PercentDone, TriggerState, WeaponState, DistanceToTarget,
+// RearFiring.  The cockpit found it -- the shipped binary lights the
+// fire-ready disc on the STREAK 6 panel (WeaponCluster gates it on
+// PercentDone >= 0.99) and ours never did, while the launcher itself
+// reported state=Loaded recoil=0 level=1 bin=24.  The gauge was reading
+// the unbound zero cell, not a broken weapon.
+//
 MissileLauncher::SharedData
 	MissileLauncher::DefaultData(
 		MissileLauncher::ClassDerivations,
-		Subsystem::MessageHandlers,
-		Subsystem::AttributeIndex,
+		MechWeapon::MessageHandlers,
+		MechWeapon::AttributeIndex,
 		Subsystem::StateCount
 	);
 
diff --git a/restoration/source410/BT/PROJWEAP.CPP b/restoration/source410/BT/PROJWEAP.CPP
index a25bf52f..b7343ea1 100644
--- a/restoration/source410/BT/PROJWEAP.CPP
+++ b/restoration/source410/BT/PROJWEAP.CPP
@@ -446,5 +446,23 @@ void
 		break;
 	}
 
+	if (getenv("BT_VIS_LOG"))
+	{
+		static int projStateSamples = 0;
+		if (projStateSamples < 8)
+		{
+			++projStateSamples;
+			DEBUG_STREAM << "[proj-state] '" << GetName()
+				<< "' state=" << GetWeaponState()
+				<< " recoil=" << recoil
+				<< " rechargeRate=" << rechargeRate
+				<< " level=" << rechargeLevel
+				<< " bin=" << ((bin != NULL) ? bin->GetAmmoCount() : -1)
+				<< " simState=" << GetSimulationState()
+				<< " heatState=" << GetHeatState()
+				<< "\n" << flush;
+		}
+	}
+
 	Check_Fpu();
 }
diff --git a/restoration/source410/BT_L4/BTL4GAU2.CPP b/restoration/source410/BT_L4/BTL4GAU2.CPP
index 8ea37b0c..4b526686 100644
--- a/restoration/source410/BT_L4/BTL4GAU2.CPP
+++ b/restoration/source410/BT_L4/BTL4GAU2.CPP
@@ -1915,6 +1915,8 @@ SubsystemCluster::SubsystemCluster(
 	// buffer).  A model that authored nothing keeps the bare frame.
 	//
 	background = NULL;
+	int clusterPlacement = -1;
+	const char *clusterBackgroundName = NULL;
 	{
 		int placement = -1;
 		if (subsystem_in != NULL
@@ -1922,6 +1924,7 @@ SubsystemCluster::SubsystemCluster(
 		{
 			placement =
 				((PoweredSubsystem *)subsystem_in)->GetAuxScreenPlacement();
+			clusterPlacement = placement;
 		}
 		if (placement >= 0 && placement < 8 && image_names != NULL
 			&& image_names[placement] != NULL)
@@ -1933,6 +1936,7 @@ SubsystemCluster::SubsystemCluster(
 				0xff, 0			// fg / bg
 			);
 			Register_Object(background);
+			clusterBackgroundName = image_names[placement];
 		}
 	}
 
@@ -1963,7 +1967,12 @@ SubsystemCluster::SubsystemCluster(
 			Register_Object(titleBanner);
 		}
 		if (getenv("BT_VIS_LOG"))
-			DEBUG_STREAM << "[cluster] port=" << mfd_port
+			DEBUG_STREAM << "[cluster] sub='"
+				<< ((subsystem_in != NULL) ? subsystem_in->GetName() : "(null)")
+				<< "' powered=" << (powered ? 1 : 0)
+				<< " placement=" << clusterPlacement
+				<< " bg='" << (clusterBackgroundName ? clusterBackgroundName : "(none)")
+				<< "' port=" << mfd_port
 				<< " x=" << x << " y=" << y
 				<< " title='" << (title ? title : "(null)")
 				<< "' banner=" << (titleBanner ? 1 : 0) << "\n" << flush;
@@ -2523,6 +2532,19 @@ void
 		warningState = -2;								// lamp: force redraw too
 	}
 
+	if (getenv("BT_VIS_LOG"))
+	{
+		static int weaponWarnSamples = 0;
+		if (weaponWarnSamples < 16)
+		{
+			++weaponWarnSamples;
+			DEBUG_STREAM << "[warn] " << identificationString
+				<< " drawState=" << previousDrawState
+				<< " percentDone=" << percentDone
+				<< " warnState=" << warningState << "\n" << flush;
+		}
+	}
+
 	if (previousDrawState == 0)
 	{
 		int