I purchased the Walther P22QD Tactical FDE pistol and have had no issues with ammo so far. .My issue is the front Hi Vis sight is loose. It has the small screw on the bottom inside the top of the slide to hold it in place. Problem is that after shooting it has worked loose enough to wiggle around. The way the screw is located it is impossible to get a straight screwdriver into the screw to tighten it up because the part of the slide that the barrel slides through is in the way of getting a screw driver into it. Has anyone else had this issue and if so, how did you get the screw tightened up.