How wide is the rib?My grandpa had a "lightning" "Broadway" bought brand new in 1958 for 400 bucks,sold it for 800 bucks in 2005,was in PRIMO shape.My grandpa didn't care one bit when I told him he'd shortchanged himself by a bunch......... they were going for 6500 bucks at an online house when he sold his.He said I doubled my money on it,shot a lot of targets with it.
So you've been dry firing? Fire,bump the stock on the floor to simulate recoil and pull the trigger it will click.To clean the guts your going to have to remove the stock from the reciever and there are JESUS parts in there,that you could find yourself looking for.I had a gunsmith take apart a rizzinni that was doubling on me and there were springs in the air.Id say stuff two shells in it and give it a test go before removing the stock.