Thanks, Carl. No surprise here when I loosened the gun screws. Old timey rib repair, both barrels. Even used an engraved gun screw. Without the screw each rib pops up for about four to five inches and then tight. Makes me wonder why they both came loose as I have a number of equally aged SxS's, other makers, with solid ribs. An Ithaca Lewis bolting issue or using modern smokeless? The later would be my guess.
Okay, they are what they are. The question is can this be repaired without a complete stripping and relaying the rib?
Engraved the screw head