hey arms 18 owners...i need a hand doing the final installation step for the mount on my m14. my instruction say "loosen the front socket screw, but do not remove" check, did that then... "adjust the front tension button bushing by inserting a jewlers screw driver or scribe in the notch in the top of the bushing, and turning down until the button contacts the front ring of the reciver." this is the part i dont understand, i cant figure out a way to make the thing screw down..where am i supposed to put the jewlery screw driver? any help would be appreicated from people who have an arms 18 thanks.
-area of interest (sorry it isnt very clear) -whats the little bronze thing for?
-area of interest (sorry it isnt very clear) -whats the little bronze thing for?

