I just picked up my first MK4 and went to sight it in... 6 inches high and 7 inches left. Then I went to adjust it. Why in the heck does Ruger make the screw slots so small.. I have a Brownells Master screw driver set and only one fits the windage screw and non fit the elevation, I had to use a knife blade. If Ruger is going to make them this small include a sight adjustment tool. That said, I am really liking this thing. Love the 1911 grip frame. Why did I not buy one before now...