piston help

Don't run them. The metal there is there for a reason. Sure you can dress it up and make it work for a while, but eventually the piston skirts'll break in the engine, and you'll have to bore it over.

Also, did you buy these new? or used? Because you don't damage a piston like that by "shipping" I've dropped pistons, I've thrown pistons at things (long story) and I've hit pistons with hammers and done less damage than that. if you bought them new, Send 'em back and get a proper set. If you bought 'em used under the assumption they're good, I'd raise hell too.