Posting here first but will try to call them in the morning. Installed the new krebs beryl type rail. Loctited everything and followed the install guide. Checked to make sure everything was set and let the loctite set in. Went to the range this morning for the second time did the same thing the first go around. The rear latch is tight and with no play. After shooting 3 rds the mount has verticle play. The lever is still tight pushed forward , all other screws are tight and in the same place as I marked them once in place. Any one have one and have you had this problem.