thanks Ambros303 yea its my grp.28 tuned. i have been trying to find a piston and sleeve. i ran the truggy at 240 here in cali at one point it got to 270 and hurry got it cooled down and after that i dont have a good pinch anymore. motor was only 1month old and now its no good. i mailed renew (lance) he says he can repinch. but alot of people told me no and rossi has a part tha twill fit but i have been looking. and those tq and other are those for the .21 motors?