OP,
One thing that often gets overlooked are the tires (wear pattern and age), plus the brakes and wheel bearings.
If the unit is mounted on springs, you may want to look into greaseable shackle bolts.
I added them to my 24' car hauler and it gave me an opportunity to align the two axles with a long straight edge. No more tire scrubbing.
Mike in Colorado
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2004 Fleetwood Pace Arrow 37c, 8.1 gasser, (Jezebel) Ultra RV ECM / TCM, plugs wires, and rear track bar, PPE deep Tx pan w/ temp gage, Bilstein's, Sailun's & Sumo's all round, pushed by a 2002 Grand Caravan, on a Master Tow Dolly OR a WR-250 on a rail.
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