Tom, congrats on finding a 14" rim that works for your U-Haul!
We had a long quest to get a 13" rim for our
U-Haul, and after many trips to our local
U-Haul center, finally had success too. What made the difference for us, was that on the final trip in, the employee gave
us the phone number of the major
U-Haul center that they get parts from. Steve phoned, asked to speak to their parts person, ordered part # 23516006, and arranged to have it sent to our local U-Haul center (with that manager's knowledge). It cost $79.
I think the reason that we weren't originally successful at U-Haul was because the employees that made phone calls on our behalf explained the situation to the person on the other end.
"Hi, I have a customer here with one of U-Haul's old camper trailers and they'd like to get a rim for it..." which always prompted discussions of how U-Haul was no longer responsible for the trailers. Success happens when you instead start the conversation by saying
"Hi, I need to order part # 23516006" It's also best if your local U-Haul dealer calls to order the part - it was a little problematic when the person we called discovered that we weren't a U-Haul dealer ourselves since they aren't supposed to sell them to the public.
Jeanne