I have the same trailer, Ed has seen it, I went with 6 ply tires, switch the axle to the top of the springs dropping the trailer lower (yes, I had to remount the fenders, drill a couple new holes and yer done) and welded all the pivot points. Installed a heavier hitch, braced the A arm, added rails along the side and front, a tool box, spare tire holder and installed new wheel bearings and races. Lowering the trailer made it easier for a single person to load a bike now. Oh yeah and built this monster of a loading ramp. It won't bend, we tested it with 1,000 lbs on it lol.
Sounds like worthwhile mods; can you add a few photos of the mods? Something to show the effect on ground clearance would be nice as well.




