Chad i bought 2 of the fully modded Ex-Tech 21's .. the one in my buggy runs great. however i put the second one in a truggy and it broke a con-rod on its 2nd race day... if never over-reved or went WOT out of control.. it just broke in warm up at the Reedy race.. Is there anything that can be done?? i bought them about a 2 or so months ago and never really got to run teh one that broke...