Hey guys, I have a MGW rear sight pusher so marring the sight up is not an issue. My question is that I was told the rear sight needs to go in at least 1/3 of the way if not 1/2 of the way with little resistance and then be pushed in the rest of the way. My Ameriglo Operator rear sight is going in maybe 1/5, MAYBE 1/4. The last one I had I tried sanding and ended up just screwing up the sight. So I bought another rear. Live and learn. Now I'm asking how to do it properly. 1. WHERE does the sight need to be filed? I've read some people say rub it on some sandpaper on the bottom. But others have said file on the back of the sight. Where exactly should the sight be filed in order to fit? 2. How likely am I to damage the dovetail by pushing in a tight sight? If 5 years down the road I learn that I ruined the rear sight...fine. But I don't want to ruin the gun by ruining the dovetail. Any general advice would be appreciated. I have done a search, watched videos, etc, and am still lost. Seems like some people say "don't worry, just press the sight in with your sight pusher" others say "Sand the bottom with a file or sandpaper until it fits in 1/3 or 1/2 the way then push it in" and yet others say "take a file and file the back area of the sight until it fits in 1/3 or 1/2 the way." I'm just confused. Again, I CAN get the sight in with the sight pusher and some elbow grease. But I'd like to do it properly and not risk damaging the dovetail. Thanks in advance!