I am in the middle of installing a set of Trijicon GL11 Novak sights on a Gen3 22 and a Gen4 23. I am having a bugger of a time getting the rear sights on. I have a MGW Glock sight pusher but the slanted sides of the Novak sight kept making the sight slide out of alignment. I clamped the slide in a padded vice and gave the sight a few good raps with a hammer using a wooden dowel. The sight moved a little but now won't budge. Anyone have experience putting these sights on? I have put tons of Glock night sights on Glocks but this is the first set of Novak type sights I've worked with. Any suggestions?