I had our TT axles flipped by the dealer first thing when we bought it. It was around $400 and raised the trailer about 4". For folks who have welders and the other proper tools and know what they're doing, I think it is <$100 in parts and an afternoon worth of time. That's not me, so I had the dealer do it.
Aspen Trail 2710BH | 470 watts of solar | 2x 6V GC batteries | 100% LED lighting | 1500W PSW inverter | MicroAir on air con | Yamaha 2400 gen