I thought I should give the final outcome to my pump stopping.
I first took it to Sumbum in Yuma he was quite knowledgeable and had repaired several vacuum systems. Mine was quite unique with a small access hole which would not let him get in far enough for a fix.
Next I called Fleetwood and asked for the nearest Fleetwood dealer, two in Las Vegas and I chose Findlay which was a lucky draw. Called them got a 8am appt in two days. They had my vacuum system functioning as good as new and serviced my refrigerator by the end of the day.
I must say I can't remember having work done on any of my vehicles by a more professional business than Findlays.