Interested in ashley sights for my glock 26. Went to ashley website, but not clear how to install. Seems they only have set screw rear sights for glock- is that correct???? If so do you just position sight and then put on red loctite. If so can you apply loctite with sight in place, I assume set screw holds for a while until you apply loctite. Harder if have to mark, then apply loctite and reposition to some mark. Also nothing on how front sight attached to glock. I have trijicon on one glock, is that how ashley are attached and can I use same tool/nut driver I used for trijicon front sight. Any info would be appreciated, even question I have not asked, but should have. And of course how do you like your ashleys? Also will they exchange rear sights if you need to adjust for your point of impact. I had to exchange my trijicon rear in one case. thanks.