So today I finally decided I was going to install my set of Meprolight Night Sights on my G36. I went to the hardware store, picked up a 3/16 hex screw driver and a little bottle of blue Loctite. The rear sight install went great, almost too perfect. I drove the plastic, stock rear right out with a wooden dowel and a hammer. Then I slid the steel rear sight in, and carefully set it in place with the hammer and dowel. I felt great having made it thus far, figuring the worst was over. I put a drop of loctite on the screw, and spread it around evenly with a Q-tip. Then I screwed the sight on with my hand and used my screw driver to do the rest. I tightened the sight just to the point when it seemed to be snug. However when I went to insert my barrel, I noticed that the raised hex screw wasn't allowing it to seat properly. The slide would not seat correctly on the frame. So I striped the gun again and figured all it needed was another half turn or so...Well I gave it a slight turn and *snap* the threads snapped inside the front sight leaving only the hex portion of the screw. The front sight is completely FUBAR, what should I do?