Mount moves on rail, no response from bad? - Battle Arms Development Trijicon Mro Optics Mount - Absolute Co-Witness Red Dot Sight Mount

MRO went on fine and didn't have to use the washers/shims. However I can't seem to tighten/torque the mount itself to rail? Tried a couple other guns with and without cerakote and still moving forward and backward. Any tighter and I'm going to snap the head off the bolt, been there and done that before. I've emailed them a couple times to see if there is a simple solution....no answer. Love their stuff but no service behind the product is no bueno for me. I know we are ALL busy but seriously answer a freaking email Francis?!