RE: unlimited mt class.........
did you do a low chassis conversion such as a mutant maxx, or did you put larger than a .18 engine in it? if so you will have to race un,imited, otherwise you were told wrong, you should be able to race in the standard mt class.
i race a t-maxx in the standard mt class, and it has a partial low chassis conversion. it has a lower chassis plate that connects directly to the fron skid plate, and take the place of the lrear skid plate. i moved the steering servo to the opposite side and layed it down, put a rustler tank in the front left corner with the lid sticking up though the servo hole, and moved my rx and batteries down. this brought the cg way down but kept it legal by leaving the engine and trans in the stock location.