Has anybody else had a problem with little cap falling off of the guide rod? When it falls off, you can see exposed threads where the guide rod protrudes from the slide beneath the barrel. Apparently it functions fine without it (unless I miraculously notice it immediately after it falls off). This has happened twice. It costs ~20$ to replace it (the whole assembly must be replaced). I figure a little red loctite will fix it - I know I won't be able to remove it but, so what? You have to replace the whole assembly when anything happens anyway.... Anybody else have this happen, other solutions?