Finally got the toyhauler back in shape. We took it in to the dealership for the tire/axle issue and the bedroom slide that would not extend or retract unless we began the process manually.
The two middle tires (235-85-16)were slightly larger than the end tires (235-80-16). In order to get it to the dealership, I replaced the larger tire with a smaller one which gave us enough space to get it there safely.
The dealership measured the spacing and did not find anything wrong. As to the slideout, which by the way was supposed to be under the extended warranty, they said it was a "pinched cable" and not covered by the warranty, go figure, (should have put the money into the emergency funds instead). And since it was way overdue for new tires, we had them install 6 new Sailuns. Time will tell if that was a good decision