I have an old Nylon 66 that was given to me by my grandfather about a year ago. I finally got some time to really play with it, just recently. As I was adjusting the rear sight a bit the adjustment screw popped up from the sight post. I have tried to screw it back in but it looks like it puts the screw at an odd angle when I press on the sight post causing the threading to be unable to catch.

Anyone have any experience with Nylon 66s? Or any tips on what I can do, or would be best to just bring it to a gunsmith?
I can snap a couple pics if needed. I know my description isn't the best.