ok - so here is the final report on the propane hose saga.
I did scour the area's hardware stores, HVAC/plumbing supply centers, and propane companies. As expected none had the hose I needed, but I was surprised that none could come up with a bushing or reducer that would help. So this morning I drove an hour (nothing is close in rural Vermont!) to the only large-ish RV center in our region for their help. They looked at my hose (taken from the one year old Scamp) rolled their eyes and said, "Wow we haven't seen one of these for years. You must have an old regulator". They dug through a miscellaneous bin of left-over parts in their service department and came up with a used adapter that would connect the currently standard hose to my regulator and I'm back in business. Scamp would have sent me a replacement, but since it has proven so hard to find, I prefer not to be reliant on a mailed replacement from MN if I ever need one on the road. Now I can use the pig tail hose that most RV centers seem to stock.
Given earlier experiences with Scamp this isn't a total surprise. In many ways they seem stuck in the past (not all bad I admit) with their methods and parts (when I asked at the time of purchase if they offered LED lights
, the reactions was "why would we do that?", and email is embraced only tentatively). I googled the manufacturer and model # for my regulator and the sites offering it for sale
were all on ebay and appeared to be firms that bulk purchase discontinued items and resell on ebay. So Scamp may have gotten a deal on some old regulators that are being installed. Nothing wrong with that but probably the explanation for the non-standard hose connection.
Thanks again for all the suggestions.