I can not fathom that the piston even fits into the cylinder if the bore is .007 inches to small from side to side.I think the issue is the bore being out of round though, it's 7 thou out at the bottom (too narrow). 4.6 thou where the rings get to.
The front to back piston to cylinder clearance has a normal maximum of .0028 inches of clearance.
Can you turn your piston sideways and insert it into the cylinder bore (without the rings on it)?
Then one can use simple feeler gauges to measure the piston Skirt to cylinder clearance at many different points inside the cylinder bore.
Not quite as accurate as a Good Dial Bore Gauge, but pretty darn close!