Try viewing in HQ if you can. It comes in a little more clearly. Stripped Head stud hole that developed in my Duncan Powervalve Cylinder. This occurred when I went to do my final torquing of the head to leak test and run the engine. As can be seen, the casting is not lined up properly, which allowed the stud threads to break into the water jacket. I need to get this repaired one way or another, or I'm out a lot of money.
Honda, TRX250R, Powervalve, Cylinder, stripped, head, stud, Duncan, Racing, PC2000