diff --git a/game/reconstructed/mech4.cpp b/game/reconstructed/mech4.cpp
index a38e070..1447c0e 100644
--- a/game/reconstructed/mech4.cpp
+++ b/game/reconstructed/mech4.cpp
@@ -6618,23 +6618,46 @@ void
 			{
 				// COMMA-LIST (eject bench): "GeneratorA,GeneratorB,..." kills
 				// each named subsystem; single-name behavior unchanged.
+				// PARTIAL form (leak bench, #119): "Condenser4=0.5" sets the
+				// subsystem's own zone to that LEVEL without the crit kill --
+				// a deterministic LEAK source (damage x heatLoad drives the
+				// coolant draw), so the leak alarm/voice path is testable
+				// without waiting for random cook-offs.
 				char want_list[256];
 				strncpy(want_list, getenv("BT_KILL_SUBSYS"), sizeof(want_list) - 1);
 				want_list[sizeof(want_list) - 1] = 0;
 				for (char *want = strtok(want_list, ","); want != 0;
 					 want = strtok(0, ","))
 				{
+					float partial = -1.0f;
+					char *eq = strchr(want, '=');
+					if (eq != 0)
+					{
+						*eq = 0;
+						partial = (float)atof(eq + 1);
+					}
 					for (int i = 2; i < GetSubsystemCount(); ++i)
 					{
 						Subsystem *s = GetSubsystem(i);
 						if (s == 0 || s->GetName() == 0) continue;
 						if (stricmp(s->GetName(), want) != 0) continue;
 						if (!s->IsDerivedFrom(MechSubsystem::ClassDerivations)) continue;
-						((MechSubsystem *)s)->SetSubsystemDamageLevel(1.0f);
-						((MechSubsystem *)s)->ForceCriticalFailure();
-						DEBUG_STREAM << "[killsub] '" << s->GetName()
-							<< "' force-destroyed (statusAlarm=1, zone=1.0)"
-							<< std::endl << std::flush;
+						if (partial >= 0.0f)
+						{
+							((MechSubsystem *)s)->SetSubsystemDamageLevel(partial);
+							DEBUG_STREAM << "[killsub] '" << s->GetName()
+								<< "' PARTIAL zone=" << partial
+								<< " (leak source, no crit)"
+								<< std::endl << std::flush;
+						}
+						else
+						{
+							((MechSubsystem *)s)->SetSubsystemDamageLevel(1.0f);
+							((MechSubsystem *)s)->ForceCriticalFailure();
+							DEBUG_STREAM << "[killsub] '" << s->GetName()
+								<< "' force-destroyed (statusAlarm=1, zone=1.0)"
+								<< std::endl << std::flush;
+						}
 						break;
 					}
 				}
diff --git a/game/reconstructed/mechtech.cpp b/game/reconstructed/mechtech.cpp
index 2ac2f69..a667644 100644
--- a/game/reconstructed/mechtech.cpp
+++ b/game/reconstructed/mechtech.cpp
@@ -197,6 +197,15 @@ MechTech::MechTech(
 		wooHooMinimumDuration = model->wooHooMinimumDuration;	// res +0x34 -> this+0xF4
 		wooHooDurationRange   = model->wooHooDurationRange;		// res +0x38 -> this+0xF8
 		wooHooChance          = model->wooHooChance;			// res +0x3C -> this+0xFC
+		// DIAG (#119 leak-voice dig): the AUTHORED anti-spam latch tuning.
+		// No armer for the wooHoo latch exists anywhere in the flat export --
+		// if the authored chance is 0 the latch was dormant in 4.10 too and
+		// the repeating warning voice under multiple leaks is AUTHENTIC.
+		if (getenv("BT_LAMP_LOG"))
+			DEBUG_STREAM << "[techstat] wooHoo authored: minDur="
+				<< wooHooMinimumDuration << " range=" << wooHooDurationRange
+				<< " chance=" << wooHooChance
+				<< " alarmModel=" << alarmModel << "\n" << std::flush;
 
 		//
 		// Walk the owner's subsystem roster and attach a monitor to every