Ive done it now, out for a ride on the weekend, the bike felt weak. almost got back to my house and BANG! I pulled the head off to check the piston, or lack there of, and noticed my right side rod bearing on the big end is MISSING. The crank on either side of the rod is blue and the case is filled with metal .The cylinders are 5o over now, can they be bored again? Any ideas as to how this happened?