Unfortunately i have to wear a serpa holster for something im going to be doing despite my hatred to that style of release. My problem is the serpa i have is really tight even with the tension screw removed. If i drop my gun in it i have to push it down to get it to lock and have to push it down before i can push the release. i put another 1911 in it and it fit fine. Is it common for the holster to be picky on various guns? Is there any remedies for this. I am trying shoving a chunk of plastic in there to spread things apart, i read about that elsewhere on the interwebs.