416 Burning oil and the road to redemption

RAMM said
The pistons are nice Ross forgings. I think I know what happened here. I think these are 4.060" rings and the bore actually measures 4.0715" for exactly .005" piston skirt clearance. Every .001" increase in bore opens ring gap up .003" (pi) So roughly .036" end gap plus the usual .018" gap a non-file fit ring set gives and we have .054". J.Rob

I've been looking at this real hard for 2 days now and I still see .0115 piston to cylinder wall clearance, maybe more. Doesn't mean it won't work, but that would be a wee bit more than I would like to run. What am I missing? What do the piston skirts actually measure? Are the pistons for a 4.060 bore?