I have not contacted traxxas yet, but has there been a bad batch of pistons? I have owned one of my 3.3's from the start, has been broken in to the t per traxxas's instuctions. Has never been ran to hot as far as head temp, wish someone made a more acurate exhaust temp sensor, but thats another subject. Any ways the other day it quit, and would not start. Took it apart and a small piece of the piston skirt had broken off. This engine was in awesome shape, never abused, and very good compression. Anyone know what options i will have besides either buying a new engine, or rebuild? The rod is skuffed up on crank side because of the very little corner of the skirt that obviously ran through the engine. Thanks for the help. I would post a picture but for some reason i am not allowed to on this forum....