"Slotmachine"
Paul, per your suggestion I removed one "O" ring from the front shocks and that helped even more with the chatter. Now it is completely gone. The car goes very smoothly through the corners with no loss of roll speed. All four tires stay on the carpet and it didn't traction roll.
So how about some suggestions on how to break in Mabuchi motors to make them fast
Thanks again for the help