From this post it sounds like he's willing to let you send in whatever you ordered to be fixed/replaced regardless of what stupidity occured.
If this is accurate, looks like you can stop harping on whatever you feel you were 'right' about and move ahead with new plates.
That wasn't acceptable to me the first time he offered. No way in hell am I sending them my slides to fuck up. I'd castrate myself first.
I'm not worried about it though, the charge has already been disputed with AMEX and plenty of correspondence sent their way. I'll get my money back regardless. He chose to have his shitty business practices aired over $300 worth of parts that should have never went out the door. If you only knew some of the stuff that industry guys have messaged me about this guy.