You did great! It sure is worth 10 X what the 10-22 is. Numrich and Midway sometimes have stocks for reasonable prices. It's the same as a 336 stock. I would take it apart and clean it and find out why the receiver halves are not tight. Is the take down screw loose? To take it apart, keep the lever closed, and cock the hammer. Back the screw out, and tap the gun on your knee to separate. Obviously, make sure it's unloaded before you do!
I own 10 of these in different years and configurations, and they are the best 22 ever made IMO. Please let us know how you make out!