I'm doing a 95" with KB's STD 348 Hypertuectics. The boring/honing is done (both with .0013" clearance) but I'm a little concerned about the sizes of these. One is as KB claims (3.8745) and the other is (3.8713). My rep where I bought them seems to think this is perfectly normal, but I think the freak piston should not have made it into a box for market. Wondering if their QC has over/under #'s that are tolerable. A lot of extra ring grinding on the smaller piston & I think if one was to get a piston that was larger by .0032" you would need to order an over-sized ring pack. The true piston required no grinding on the scrapers, a slight shave on the second ring & a wee bit more on the 1st to get .028". Two questions come to mind: 1-Anyone aware of any specs KB's (United Engine & Machine) Quality Control might use? Anotherwords, maximum larger/smaller exceptable #'s before packaging. 2-Could there possibly be an issue running with one cylinder/piston .0032" smaller than the other? Thanks in advance!!