Please don't take this the wrong way. There's only one way to ask the question though, and it makes me sound like the dick (sorry Al, sorry Dallas ), which certainly isn't my intention. I'm not a fan boy of anything AM, btw. Some things are good and some arent.
Why are we beating up on an AM piston? It was quoted to be in pristine used shape. I've seen lots of oem pistons that used 1.2mm rings, 1.5mm rings, and some that were less than 1mm. You just mistakenly used 1.2mm rings on a 1.5 piston, correct? The piston itself would have probably been fine with the correct rings on it ?