Thanks for the reply, but that didn't help clear up any confusion at all. I suppose the answer is that the subrails need to be cut back to fit new k55 rails, but k66 is a close match out of the box sorta speak?
My table mechanic seems pretty knowledgeable, but he doesn't seem to savvy to this problem or it's solution. I've paid him to set up the table and agreed on a price for the move and setup. I don't know how to approach having this done properly.
I hate it, but for now I think I'll go with K-66 at the lowest setting on the strip and if it's noticeably unacceptable I will have to wait and find a mechanic that can resolve this issue on this table and redo all of this work.