I have an American Vintage Jazz bass with the original bridge. It's fine and I don't feel the need to upgrade it *except* for the fact that it doesn't seem to stay put after I've set it up. Recently, I've noticed that the action gets messed up, I can visibly see that the saddle is way further down on the set screws than I originally set it. In the past I've also noticed that the intonation screws back out of their correct positions. Short of swapping the bridge, is there anything I can do with a vintage Fender-style bent plate bridge to get it to behave better? Loctite? Or should I just bite the bullet and get another bridge?