Where in ON are you?
in Holland Landing (S of Barrie) is good. $ but good.
Gannon's RV (I think) rebuilds them, they are near St. Thomas. Check posts by Alf S. he has mentioned the place a number of times.
If looking for a used one, don't limit yourself to Fiberglass Trailers. The RM211 came in a lot of different trailers. Have you tried looking at one of the fridge
troubleshooting publications in the document centre?