Congrats. per usual your work looks great. The Vegas was one of two Mullers back in the day that you could get dials for and make into really a good rep. The old school smaller conquistador with ETA 2892 was the other. By the way the roulette mechanism is every bit as good on the rep as on the gen. I actually sat in a meeting with a client who is also a long time friend and he was wearing the gen in gold. He let me play with for a while. And yes, he had bought it after a good night in Vegas.
And although I can't remember the exact details the wisdom when they originally came out a few years ago was to buy two different models and combine the parts. One actually takes the dial perfectly but has an inferior case back and crown. The other has a good case back, crown and some other better parts. Even buying both and a gen dial you are into it for $300 or so if I remember correctly.