Managed to pick one up for $310 out the door. Only problem is I can't get the goddamn screws on the underside of the slide out to remove the adjustable rear sight. It's in there REAL tight, probably with some threadlocker too. Any tips or is there a tool i'm missing here to make life easier? I've got a T grip 3/32 hex but its so tight in there and wont budge im afraid of stripping the screws.