I just installed a 10-8 rear and a 10-8 brass bead front sight on my Les Baer Custom Carry. Getting the old sights off was the worst part, these suckers were tight. Drilled out the front roll pin and beat them out. Now for the install, rear sight pushes all the way through with my thumb. It is snug but I can go from one side to the other with just my thumb pushing. Front sight is a little tighter, I can push it almost to center with my thumb then a very light tap from the hammer using a scrap piece of kydex as a punch finished it off. I did not sand or file either sight, opened out of the pack and installed. I did go ahead and put loctite on the front and install the roll pin so maybe it will be good. What about the back? Should I try to shim it to tighten, if so using what? Should I loctite the sight in and depend on the allen screw to hold it? After seeing how tight the factory sights were I was very surprised by the loose fit of the 10-8's. Maybe this is how they are meant to fit, first time I've done sights so I'm not sure. Thanks for your time.