Parts For Remington 597 22lr Remington 597 .22 LR Facing Problem,anyone Has The Same Problem?

Remington 597 .22 LR facing problem,anyone has the same problem? - parts for remington 597 22lr

I have the screw was missing from my semi-auto 597, while my nephew 3 range.After people who took the party was finally shot, and a return to the castle and I thought was a gunsmith and shooting.Later He said no more parts missing and should be fine, but now there is some slack in the castle, and seems willing to return if the people shoot.Has I had the same problem and what to do is to repair the subway, or should I sell?