OK, got on the road this AM and it was 43°F outside. Shifting is fine when engine is cold, RPM drops as soon as I press the clutch. As the engine started to warm up, RPM gradually started to hold at 1500K and once the engine was warn, RPM was stuck at 2K every time I shifted.

Justin, i followed your recommendation and after pressing the clutch, I shifted to neutral and let off the clutch and no difference...RPM stuck @ 2K then it drops like a rock.

What I don't get is why it doesn't when the engine is cold.

Again..thanks for your help!