So I picked up a new pistol upper and turns out the hand guard is turned slightly. It attaches to the barrel nut with some screws. So to get the hand guard lined up the barrel but is loose and if I tighten the barrel nut the screw holes won’t line up. Can I back the barrel nut all the way off and try to get it tighten up so it lines up? Or is there a right way to do it?ive never put one on so this is a first to me.