I bought the 930 turkey model with Fiber optic sights front and rear. I plan to go pattern it for turkey hunting tomorrow, but I noticed that the rear sight is missing the elevation adjustment screw. If you have this gun have you had to adjust the elevation on your gun? I was really happy that it is totally ready for turkey hunting, and now its just disappointing. Alternatively, does anyone know the size of the screw? maybe I can just buy the right screw........Finally, if you have put aftermarket sights on this gun, what do you recommend? Thanks for your help.