I'm having the same problem, and it's really pissing me off. I'm almost ready to say "screw Nitro" and Ebay my matrix for a mini, or a helicopter or something. A hobby should be fun, and not a pain in the _ss!!

I have the matrix RTR with an OS.21 VG, and my fly wheel seems like it should be lower to the chassis. Is there another motor mount or fly wheel that anyone can recommend? Or is the car designed to only be used with pullstart engines?