Speaking of hub, here is something to check once you're on the road. At the boat launch or somewhere down the road if it's a long trip, touch you hubs with your hand and compare the two sides. They should only be slightly warm. On my last trip, a 4 hour drive, I checked the hubs with a infrared thermometer and one side was 97 and the other 101 degrees. The tires were just a few degrees warmer. One thing that puzzled me was the left side of the trailer and the van tires were 3 or 4 degrees than the trailer and van tires on the right side.
The sum was on the left or cooler side.
"gene"