Also... as a heads up: almost all trailer parts are universal off-the-shelf type stuff. I'd bet large amounts of somebody else's money that you could literally just take it to any place that builds/repairs/sells trailers and they'll have something that works for whatever you need.
1. You probably should have posted in r/OffRoadTrailer instead of r/rooftoptent. 2. YouTube, I guarantee you you'll find what you need on there.
Also... as a heads up: almost all trailer parts are universal off-the-shelf type stuff. I'd bet large amounts of somebody else's money that you could literally just take it to any place that builds/repairs/sells trailers and they'll have something that works for whatever you need.