Hello. I just got back from the range shooting my new National Match m1a. What a blast! I was definitely a head turner. Anyway, the only problem I had was trying to adjust the sights. For the front sight I loosened the the bolt and tried to move the sight with my fingers but for the life of me it wouldn't budge! Also I tried to move the elevation to calibrate it at my 100 yard zero by loosening the screw but no matter how loose it was, the elevation would move when I moved the wheel. Please help! Thanks All.