bad news! i took the backplate off my nova 21bf tonight after practice and noticed the piston skirt had a chunk missing from it!...i found the chunk and quickly put the motor back together and ran it just to make sure it wasnt me that broke it when taking it apart!...i always make sure the piston is @ tdc when taking off the backplate!....the motor runs fine and hits high rpms!...it didnt want to idle,but it was 9:30@ night so i couldnt warm it up!...obviously this is no good but will this piston explode eventually?....