Yep we've been in touch, he voluntarily mailed me out a new mount and I am mailing him back the old one still. Great Service! I really doubt it is the CASM as it seems quality x 10 haha. Maybe I should take the plunge and pop off my iron sights again and see what the new mount he sent me does...after I finish fixing my grizzly mag that I pooched, one only has so many clean surfaces!