Thank you for taking the time to video and post! There are more than a few of us wondering if our campers will work with TRX. My Lance 2185 TT weighs 1,600 less (4,600 dry) but has about the same hitch weight. Seems promising and I am hopeful it will work with the TRX. I will be buying a WDH that's for certain.
Can’t really tell for sure by the video but it looks like your aftermarket wheel and tire set up may stick out wider than factory. The factory wheels and tires set up is designed to tuck up inside the wheel fender.
Just be careful as would really hate for you to hit a big bump and those aftermarket wheels hit your fender and damage it. Again, can’t tell for sure if that’s the case by the video but I’m sure you’ll be watching it closely.