Has anyone had problems with the pistons breaking on their C6? My original one broke the bottom half off about 3/4 gallon in. I just had the 2nd one blow the bottom off yesterday. One of the guys I race with had the same thing happen to him last season. I thought it was a fluke but now it's happened twice to me. At 180.00 a whack for P/S/R's I'd like to get to the cause of it before blowing the bottom off another one. I did get a good 1-1/2 gals on this one before it popped but I would think this should be a good 3-4 gal. motor with rod changes.