Bill, I have never personally broken one, (but I use a judicious amount of torque to get a "good firm snug" rather than a "godzilla hold" with/on the pinch bolt)... I'm inclined to believe that overtorqueing rather than design flaw is responsable for most of these occurrances...... (As was the case when the "D" shaped spacing washer was omitted on the 350, 450 top bridges, and they closed too much)... The only broken ones I've seen were the result of accidents/impacts..... Regardless, could you post the correct torque specs for the pinch bolts please?....There are several members working on 360's.... Thanks, Steve
P.S. I have the spare set aside for you..... S.