I thought that membership was opened to all RVs. I have been a member for about three years and I decided to join a local chapter. I live in NH and NH does not have a local chapter listed, so I looked at the next closest and found one in Massachusetts. When I called the phone number listed for that chapter I was told I had to own a certain brand of motorhome. I own a very expensive 40ft DP but I still could not join there chapter. Why?