After thinking about it all, I might can the idea of using that sleeve I cut. It's already going to be hard enough. I could use a piece of 1-1/4" x .058" and it will shim up nice. As you can see the new bender is in place. I'm either going braze on, or with a Thomson seat collar. I mean, how can you go wrong with Thomson.
Having to hand file, and rework this stuff is a real mess. What are my options? Not many. Here a matrix of hose clamps helping me out getting everything aligned.