With .003 clearance, according to my manual, this is too much clearance. Went back to machine shop for remeasure, he suggested .002 bearings. Had .001 clearance with plastigauge, unfortunately crank would not turn, same with rods. Had already sent back the set of std. bearings, reordered new std. Sealed Power bearings from two different sources. Checked with George Ashe Jr. (who at 89 is still building flat heads) to verify the use of std. bearings. The crank journals were all well w/in specs. Just under .002 clearance w/ plastigauge and new std. bearings. Engine sounds great, 45# at fist start, 40# driving down the road, 35# at hot idle. I have done 3 heat cycles and retorqued head after complete cool down. Will perform hot valve adjustment. In regards to the bearings, the first set of mains were packed in shrink wrap and looked like new reproduction, the rod bearings had a piece of foam in the package that crumbled when touched not to mention they were rusty on the sides and crushed together with scratches on the bearing surface.