Hello. I have a Mossberg 590A1 with a 12" LOP Hogue stock. The stock screw has come loose on me twice, even with blue Loctite. This last time, I degreased the receiver and screw and used blue Loctite again (Im hesitant to use red loctite on an aluminum receiver) . I also used a lock washer and I scuffed up the standard washer under the lock washer to give it some bite. I noticed the screw only threads into the reciever about halfway. If it comes loose again Im going to use a longer screw. Other than that does anyone have any tricks for keeping a stock screw tight?