Rings for KB pistons 4.080

Rings are never the problem, unless it's an assembly error which isn't the rings, but the hands...lol. You have hyper pistons. We just went through this on another post. What are the piston to wall clearances set to? Even good places can screw up. It is imperative with hyper pistons in any application, that the piston to wall be correct per the manufacturer. KB hypers need it tighter than most. So if the builder went too big, the rings will not be as stable. Next is the wall finish and cleanliness. Leakdown won't indicate any oil ring conditions. So basically, tear it down. Verify the piston to wall, clean the hell out of the bores and walls, and install fresh rings. Any rings.