diff --git a/src/collision/ColModel.cpp b/src/collision/ColModel.cpp
index d2e01f50..49847dbd 100644
--- a/src/collision/ColModel.cpp
+++ b/src/collision/ColModel.cpp
@@ -24,7 +24,6 @@ CColModel::CColModel(void)
 CColModel::~CColModel(void)
 {
 	RemoveCollisionVolumes();
-	RemoveTrianglePlanes();
 }
 
 void*
diff --git a/src/control/Script4.cpp b/src/control/Script4.cpp
index 916e36e5..1337605f 100644
--- a/src/control/Script4.cpp
+++ b/src/control/Script4.cpp
@@ -106,7 +106,10 @@ int8 CRunningScript::ProcessCommands800To899(int32 command)
 			printf("Couldn't find zone - %s\n", zone);
 			return 0;
 		}
-		CTheZones::SetPedGroup(zone_id, ScriptParams[0], ScriptParams[1]);
+		while (zone_id >= 0) {
+			CTheZones::SetPedGroup(zone_id, ScriptParams[0], ScriptParams[1]);
+			zone_id = CTheZones::FindNextZoneByLabelAndReturnIndex(zone, ZONE_INFO);
+		}
 		return 0;
 	}
 	case COMMAND_START_CAR_FIRE:
diff --git a/src/core/PlayerInfo.cpp b/src/core/PlayerInfo.cpp
index 77ddfdb1..7289175d 100644
--- a/src/core/PlayerInfo.cpp
+++ b/src/core/PlayerInfo.cpp
@@ -132,7 +132,7 @@ CPlayerInfo::Process(void)
 		CAutomobile *car = (CAutomobile*)m_pPed->m_pMyVehicle;
 
 		if (car->m_nWheelsOnGround < 3)
-			m_nTimeNotFullyOnGround += CTimer::GetTimeInMilliseconds();
+			m_nTimeNotFullyOnGround += CTimer::GetTimeStepInMilliseconds();
 		else
 			m_nTimeNotFullyOnGround = 0;