Finding parts is a challenge. The most luck I've had is to use the online parts warehouses. And best of all, there's very few of them in Canada. I just google rv parts Canada and search their sites. eBay... Amazon... And even sometimes kijij. I've bought parts from everywhere. And, I've always had to make something fit. For door hinges try vintagetrailersupply.com I don't know what their shipping is like, but I have seen hinges on their sites.
Our trailer had basically rotted from the inside so doing a complete rebuild was a must. I've been working on it for three years now. Slowly doing different parts every year. This year is the year for paint
. I can't wait to actually make it look new again.
Sounds like you've got to experience tearing the floor out of the trailer like most of us here have.
If there's any questions you have, feel free to ask, there's a few of us who have been through the same thing.
Sent from my iPhone using Fiberglass RV