you can still use those pistons...nothing wrong with them. disassemble and clean thoroughly...then glas bead the skirts. the tops of the pistons that have nicks in them just media blast with aluminum oxide...come out brand new looking....the one piston with a small gouge in the top corner just lightly knock down the high spots...then dress with sand paper and then with scotch brite...be good as new. i dont agree with the way they were packaged though...very uncalled for and pure laziness on the sellers part. if you want me to fix the pistons for you give me a shout.