While we're offering only somewhat solicited advice, I'm a fan of flathead grip screws and put them on each of my guns. It makes expedient tightening easier and over-torqueing harder.
And seconded regarding the bushings coming out. My Ed Brown had one come out when I tried to remove the grips, and I of course buggered it trying to separate it from the screw. The part of the process that I did correctly was stopping there, being patient and waiting for new bushings to ship, and then using a properly fitting screwdriver to put the new bushing in with red Loctite (I know I'm never putting slim grips on this gun). The other ones haven't loosened yet and I'm not going to mess with them until they do, but if that happens I have bushings on hand.