The 48c sight on my new (to me) 1922 has LOTS of free windage movement of the aperture. The windage cap screws are loose and the aperture itself seems to have lots of 'wiggle' on the main windage screw itself (loose thread fit). I cannot, for the life of me, get the windage knob set screw loose to investigate further. I don't want to risk damaging the sight further by forcing things. I am also fearful the windage cap screws will loosen themselves to the point the whole assembly will fall out (?).
Does anyone repair these sights for a business or side business? I would be willing to pay for a job well done in an appropriate amount of time.