And Another Thing
If the screw is Tight (DO NOT over tighten the thing please) and you still have wobble, the first step is to order a NEW screw. Have some Coffee while you wait. Choke over the fact that the postage is three times the cost of the screw. Have some more Coffee. I recommend "Sumatra".
With new screw in hand, remove the OEM screw and the loading gate. Put the screw back in it's hole. Get out your Sherlock (Magnifying Glass). Under strong light, see if the screw is actually bottoming out the Shoulder. If not, remove some of the threaded portion of the screw until the shoulder buttons out. Then put it all back together with a drop of BLUE LocTite. Should you really bugger it up, you have your Brandy Knew-Two-U replacement screw in hand. Burma Shave
Hyde and Watch