Need help with scored cylinders
Freezerman
Those Pistons are TRW 'Forged' 11.5-1 Compression +.030" oversized.
A little tip, you can hone those Cylinders out, and pop in +.035" Rings.
A .007" Clearance {between the Piston-skirt and Cylinder-wall} is not uncommon for Forged TRW Pistons.
Note; The Brush Research {Flex-ball brush} may not take out the deeper scores in the Cylinder Wall.