So i need to move the rear sight a pinch left...... NEW ! EMP 4" 40 cal Have a sight pusher rig to do it. unscrew the allen key out to clear, not drag... Put on the pusher and tighten . . . .ugh, ugh . . .not moving! Remove it all . . .re-align and try again, ugh ! no movement! i'm then guessing they use a loc-tite product in the dovetail? is there a release agent? if thats what they use?