Finally got my Rifle basix sav-1 installed. Going through the adjustments and everything is good except for the safety, I think. I can't remember but when the gun isn't cocked the safety won't move. When I cock the gun I can engage the safety. Is this normal? If I move the screw to the point where I can adjust the safety without the gun being cocked then the safety no longer works (but the slider works). Did I do something wrong? Or is this normal?