I do have a traxxas 2.5 that came in the maxx. It may or may not be bad. When I got my maxx it was my first time with nitro and I couldnt get the thing to run. But now I would bet that thing wasnt running cause i couldnt tune it. I dont have a clutch for it. I could put a pullstart on it and bring to LH tomarrow if u want.