I have a ruger 32H&R in single six, adjustable sights that shoots too high...Need to change to a different front sight & the HiViz aftermarket is also too short. Anybody install a 3/8 dovetail ramp to one of these...the barrels mics .619 at end of barrel...Have seen ramps for .625 but don't know if screw holes will line up. If it would work I could add any 3/8 slotted sight to get the right height. Don't really want to gunsmith it if I can avoid (he's sloooow). Anybody have info on this? Thanks, Scott