I was shooting my new to me Model 21 trap and the keel rib fell off. For those who don't know what a 'keel rib' is (including myself a few days ago re nomenclature), it's the short 2-3" section of rib on the underside of the barrels located behind the forend lug and covered by the forearm. I've been told all the ribs now need to be relaid. I'm not sure why that is the case?? Why can't this small section of rib just be soldered back on? I'm just hoping this isn't a big deal that requires redoing all the ribs!!
