My mapp gas torch didn't get the bushings hot enough to do much melting and my cutting and banging didn't completely destroy them. Jim must have used acetylene to get his red hot and melt the bushing. I cleaned it up with a burr "that Chucke2009 recommended" smeared it heavily with silicone O ring lube and it went back together.
I hope to get back to it tomorrow and see if my sawing and hammering have caused any problems that will require further repair. We're having a dry spell and the grass isn't growing much, so things aren't as urgent as they were.