I have an AE SC10 4X4 and need some help. I have been told that the motor i am running, which is teken 4000 kv, is too large for my car. BUT, all the guys at my local hobby shop told me that this motor is the one i should use. Obviously i am new to these new cars and need some help with my setup. I have stripped out 2 spur gears in the matter of a week. so, now that i need to get another new one, what is the best gear setup to use, and is my "oversized" motor going to hurt my car in the long run?