I hear ya on the brake stuff, my IH also has the hydrovac set up, both back wheels are leaking. I'm fixing each corner as I take the wheel off to clean and paint.
Can't wait to see more pics of your super cool bus
Ol Trunt helped me out with posting pictures. You gotta get them off the internet ( from some site like photobucket ) and use the [img] button instead of the "upload attachment".