I am heading in the right direction. I am taking the 121 shotgun to the gunsmith next Wednesday to get the mechanical problems out of the way. Then I can shoot it a bunch and decide whether the $500 rib is a good idea. I'm not that impressed with the collector value of a 121, even a Routledge bored one. For $500, Simmons will install the rib and reblue the gun. I will give instructions to be careful with the preparations.