Match Mod? WhAAAAA?
 

What is it? :D

people shove a match stick between the chassis and the axle to prevent the axle from falling out. thats a temporary fix but it slows your car down somewhat.

too bad nobody ever wants to experiment and realize that theres ways to remedy this and improve performance at the same time.

dunno about anyone else, but i like to be able to change the back axle without having to chip away epoxy putty.

You could always take the tire on the side without the gear on it, and then glue it back on when you put it in....... Ir, just leave the same one in there.