I rebuilt my entire trailer a few years back, replaced the axle
and had the frame checked out. Took it out early this year and the frame cracked right off. I used the dimensions from Ian G. website he did an awesome job on his trailer, found a guy on Craigslist to make me the frame based on the drawing, my cost was about 1400.00 for the frame I reused my existing axle
and box, I also added a second propane
tank. Taking the trailer off the frame was not very difficult, you need to find the screws or bolts that hold it down and then lift the trailer off of the frame, I used 2x4s like train tracks and ran the hubs on top of them without the wheels to remove the frame. Putting the new frame back was a bit tougher because I guess the fiberglass had formed to the shape of the old frame which may have been bent a bit. So I plopped the trailer onto the new frame and let it sit for a bit, also drove it over a few speed bumps and it settled flat. Then I bolted it down. Took it on its first trip this year to Tofino and it worked like a champ.