diff --git a/Engine/source/T3D/fx/particle.cpp b/Engine/source/T3D/fx/particle.cpp
index 891f9353b..2e331fb7f 100644
--- a/Engine/source/T3D/fx/particle.cpp
+++ b/Engine/source/T3D/fx/particle.cpp
@@ -21,6 +21,7 @@
 //-----------------------------------------------------------------------------
 #include "particle.h"
 #include "console/consoleTypes.h"
+#include "console/typeValidators.h"
 #include "core/stream/bitStream.h"
 #include "math/mRandom.h"
 #include "math/mathIO.h"
@@ -132,13 +133,13 @@ ParticleData::~ParticleData()
 //-----------------------------------------------------------------------------
 void ParticleData::initPersistFields()
 {
-   addField( "dragCoefficient", TYPEID< F32 >(), Offset(dragCoefficient, ParticleData),
+   addFieldV( "dragCoefficient", TYPEID< F32 >(), Offset(dragCoefficient, ParticleData), new FRangeValidator(0, 5),
       "Particle physics drag amount." );
    addField( "windCoefficient", TYPEID< F32 >(), Offset(windCoefficient, ParticleData),
       "Strength of wind on the particles." );
-   addField( "gravityCoefficient", TYPEID< F32 >(), Offset(gravityCoefficient, ParticleData),
+   addFieldV( "gravityCoefficient", TYPEID< F32 >(), Offset(gravityCoefficient, ParticleData), new FRangeValidator(-10, 10),
       "Strength of gravity on the particles." );
-   addField( "inheritedVelFactor", TYPEID< F32 >(), Offset(inheritedVelFactor, ParticleData),
+   addFieldV( "inheritedVelFactor", TYPEID< F32 >(), Offset(inheritedVelFactor, ParticleData), &CommonValidators::NormalizedFloat,
       "Amount of emitter velocity to add to particle initial velocity." );
    addField( "constantAcceleration", TYPEID< F32 >(), Offset(constantAcceleration, ParticleData),
       "Constant acceleration to apply to this particle." );
diff --git a/Engine/source/T3D/gameBase/gameConnectionEvents.cpp b/Engine/source/T3D/gameBase/gameConnectionEvents.cpp
index 37a8167ac..04919cf8f 100644
--- a/Engine/source/T3D/gameBase/gameConnectionEvents.cpp
+++ b/Engine/source/T3D/gameBase/gameConnectionEvents.cpp
@@ -328,9 +328,9 @@ void Sim3DAudioEvent::pack(NetConnection *con, BitStream *bstream)
       AssertFatal((1.0 - ((q.x * q.x) + (q.y * q.y) + (q.z * q.z))) >= (0.0 - 0.001),
                   "QuatF::normalize() is broken in Sim3DAudioEvent");
 
-      bstream->writeFloat(q.x,SoundRotBits);
-      bstream->writeFloat(q.y,SoundRotBits);
-      bstream->writeFloat(q.z,SoundRotBits);
+      bstream->writeSignedFloat(q.x,SoundRotBits);
+      bstream->writeSignedFloat(q.y,SoundRotBits);
+      bstream->writeSignedFloat(q.z,SoundRotBits);
       bstream->writeFlag(q.w < 0.0);
    }
 
diff --git a/Engine/source/T3D/gameBase/std/stdMoveList.cpp b/Engine/source/T3D/gameBase/std/stdMoveList.cpp
index 6b4e11a72..1fd0ffdfb 100644
--- a/Engine/source/T3D/gameBase/std/stdMoveList.cpp
+++ b/Engine/source/T3D/gameBase/std/stdMoveList.cpp
@@ -96,7 +96,7 @@ void StdMoveList::clientWriteMovePacket(BitStream *bstream)
    {
       move[offset + i].sendCount++;
       move[offset + i].pack(bstream,prevMove);
-      bstream->writeInt(move[offset + i].checksum,Move::ChecksumBits);
+      bstream->writeInt(move[offset + i].checksum & (~(0xFFFFFFFF << Move::ChecksumBits)),Move::ChecksumBits);
       prevMove = &move[offset+i];
    }
 }
diff --git a/Engine/source/core/dnet.cpp b/Engine/source/core/dnet.cpp
index 6eda3533e..76748ef52 100644
--- a/Engine/source/core/dnet.cpp
+++ b/Engine/source/core/dnet.cpp
@@ -79,11 +79,11 @@ void ConnectionProtocol::buildSendPacketHeader(BitStream *stream, S32 packetType
 
    stream->writeFlag(true);
    stream->writeInt(mConnectSequence & 1, 1);
-   stream->writeInt(mLastSendSeq, 9);
-   stream->writeInt(mLastSeqRecvd, 9);
-   stream->writeInt(packetType, 2);
-   stream->writeInt(ackByteCount, 3);
-   stream->writeInt(mAckMask, ackByteCount * 8);
+   stream->writeInt(mLastSendSeq & 0x1FF, 9);
+   stream->writeInt(mLastSeqRecvd & 0x1FF, 9);
+   stream->writeInt(packetType & 0x3, 2);
+   stream->writeInt(ackByteCount & 0x7, 3);
+   stream->writeInt(mAckMask & (~(0xFFFFFFFF << ackByteCount*8)), ackByteCount * 8);
 
    // if we're resending this header, we can't advance the
    // sequence recieved (in case this packet drops and the prev one
diff --git a/Engine/source/core/stream/bitStream.cpp b/Engine/source/core/stream/bitStream.cpp
index 6080eee94..4ea46b6f5 100644
--- a/Engine/source/core/stream/bitStream.cpp
+++ b/Engine/source/core/stream/bitStream.cpp
@@ -336,6 +336,8 @@ S32 BitStream::readInt(S32 bitCount)
 
 void BitStream::writeInt(S32 val, S32 bitCount)
 {
+   AssertWarn((bitCount == 32) || ((val >> bitCount) == 0), "BitStream::writeInt: value out of range");
+
    val = convertHostToLEndian(val);
    writeBits(bitCount, &val);
 }
diff --git a/Engine/source/sfx/sfxDescription.cpp b/Engine/source/sfx/sfxDescription.cpp
index 4bf06d622..658e15a45 100644
--- a/Engine/source/sfx/sfxDescription.cpp
+++ b/Engine/source/sfx/sfxDescription.cpp
@@ -508,8 +508,8 @@ void SFXDescription::packData( BitStream *stream )
    Parent::packData( stream );
 
    stream->writeFloat( mVolume, 6 );
-   stream->writeFloat( mPitch, 6 );
-   stream->writeFloat( mPriority, 6 );
+   stream->write( mPitch );
+   stream->write( mPriority );
 
    stream->writeFlag( mIsLooping );
    stream->writeFlag( mFadeLoops );
diff --git a/Engine/source/sim/netEvent.cpp b/Engine/source/sim/netEvent.cpp
index e73a7ed4a..07b90f6ca 100644
--- a/Engine/source/sim/netEvent.cpp
+++ b/Engine/source/sim/netEvent.cpp
@@ -243,7 +243,7 @@ void NetConnection::eventWritePacket(BitStream *bstream, PacketNotify *notify)
          packQueueTail->mNextEvent = ev;
       packQueueTail = ev;
       if(!bstream->writeFlag(ev->mSeqCount == prevSeq + 1))
-         bstream->writeInt(ev->mSeqCount, 7);
+         bstream->writeInt(ev->mSeqCount & 0x7F, 7);
 
       prevSeq = ev->mSeqCount;