I had Dr. Bader, along with my primary neurosurgeon, Dr. Modha, from Rebound in Vancouver. They are very professional and the support staff at Providence was very nice and well informed. They treated me with kindness and caring. You'll have the new machine in their new building. It should go swimmingly. Or rather, for your husband, I guess. Slow growing tumors can be in there undetected for a long time, until they finally decide to cause trouble. Mine was at 2 cm, so they said it may have been growing for 15 years. On the plus side, I think that "we", the ones who have had these in there for years, have the benefit of the balance nerve on the good side to be slowing taking over for the impaired nerve. I had just a wee bit of balance issues, and most were subtle. I realize now that I'd had symptoms for a while, but didn't realize what was going on. You might pop over to the Balance thread and find the "Article on Balance System". It really explains how that all works and what happens when something goes amiss.
Best of luck to your hubby,
Sue in Vancouver, USA