First of all i am having so problems tuning my engine. The temps are about 50 degrees and it seems to be running to lean. the engine overheats. but when i richin in (which i hope is clockwise) it seems to be too rich and i can never get it right. anyone know what might be wrong? also my back wheels wobble alot. u can tell while its driving. i think its my rear barring carriers. but its really making the car hard to control. anyone know how to fix this too? Thanks for everything.