Well I got it worked out - I purchased a set of 550 endlinks. I had to do some reshaping with the dremel, and expand them to fit the profile of the Sub case, but they fit pretty well. I borrowed a jubilee from one of my Datejust's, and the Sub is now a real stunner (even with the stamped DJ clasp). It's not finished yet though. I found a seller providing a solid center link jubilee that's still made to fit the 'old style' DJ's with hollow endlinks, and it includes the fliplock clasp. I will post pics when these parts arrive and I get it all put together.