Huh? Tech-Sights use a front sight post, not a globe, so "matching" the bullseye is not an option.Try some locktite. Can you just push the sight around with your fingers? If you do not need tools locktite is just a temporary fix. You really need parts if you can move the sight with your fingers. I saw original sights for $9 and up on eBay. If you have Williams peep sights I would ditch them for some Tech Site National Match sights. They cost about $25 more than Williams sights but Tech Site National Match sights will last and they are much more accurate. You can change the sight pin so the pin matches the bullseye at the distance you are shooting. Tech Sites are popular with NRA Smallbore winners.