This makes twice my Boyd’s classic has come loose on my rifle and tonight when I tighten it up my #4 turret mark switched to #3 for 100 yard zero and it won’t group like it used to. It held tight groups on the #4 mark all year but I noticed play in it tonight because it was shooting 1” high and left and wouldn’t hold an inch group. Best I got tonight was 3/4”-1”. I’ve got a hunt tomorrow and Sunday and now my 200-300 yard marks will be off. What’s your thoughts?