I'm very tempted to go out and try knock the bolts out, as I type, but will just hold my head low with a frown and return rods/pistons to the machinist Monday. I wish we had a guy like you out here! Although this guy, Dave, did catch a possible immediate leak- he speedy-sleeved my crank to timing cover spacer/ weight (1975 block), thus I thought he was a little better machinist! It'll be better to do it right this time, so I can wait. Thanks again Pat- I actually learned a lot. Gene P.