Regarding the advice to replace suspect bolts, sounds like good advice to me. Some may have read about my rebuilt 235 which is now toasted because of a broken lock wahser on the rod's small end pinch bolt. Not only elongated the small end of the rod but the wrist pin did a number on my cylinder wall. 5 cent lock wahser-$1500 rebuild toasted all in the time it took to shut it down from 3500 rpm. Sooo, anyone know if replacemt rod bolts are available for a 261 I'm now building. They are a odd looking bolt on the big end.