Thanks Brion. I had no doubt that you would have experienced this situation. So I guess heating the bolt just won't do it to get the two parts separated from each other...
Regarding the bushing arrangement you are suggesting, I think I got it. Does this illustration match what you were describing or did I misunderstand?
I am pretty handy on the lathe so modifying the threaded rod will be easy enough.. What material would you most prefer the bushing to be made from stainless or aluminum?
Thanks again!
Pete