Kemorc you are the man...I baught a TM G4S RTR, when I tried breaking the SH12 motor in I could not get the motor to run concistantly or even rev up to high RPM. I gave the car to a pro at my local shop, he recommended I send it back to TM (he said it was defective). Then I found this post and tried out your method and found two air leaks one on either side of the pinch bolt. Thanks alot, I can't wait to see how to car runs.

I also have a question, what kind of silicone is best to use for this application?