(I'll be sending back the piston that has the small pinhole in the top even though my builder said he has seen it before and that these flaws are common to cast pistons, I don't like the fact that the other 7 are perfect and that one has that extremely small pinhole, and you are right I have no idea if there isnt a big bubble under that pit, luckily my machine shop has a brand new catalog and can get the same pistons brand new, badger has started making them again, hopefully the vendor will swap it for me though and save me 40.some dollars for a single if I have to buy one, and hopefully they won't want the whole set back to exchange for another set that could have the same deal 7 perfect pistons and one with a minor flaw(roll eyes).) How do you know that the other seven do not have the bubble and it was just not machined enough to find it? (Unfortunately you are right about some shops that would let an engine go out the door that could have a problem, but I am going to take the "When in doubt, toss it out!" approach, that pinhole piston is going back.) I would be leery about your builder since he said you could use such a part, he must be one of the guys you mentioned. Since he would "let it go out the door that could have a problem" I guess I would find another brand of pistons and another builder. I guess I am lucky and was able to build my own except for some machine work on the block. Just my observations, take them or leave them, its all up to you. ============================================================= Posted by wixList Archiver -- http://www.amxfiles.com/wixlist