Has anyone actually installed after maket sights on a Kahr? I want to install XS Big dots on my Kahr PM9 and after reading a lot of posts, many say you would be better off leting a smith do it because of the degree of difficulity due to the way the orginals are stuck on. I have watched the XS vid that shows how easy it is, but that not on a Kahr. I read from several that even with a sight pusher it's tough. Soooo....has anyone who is not a smith actually done it on a Kahr?