I'm pretty sure the same bags are not used in all positions. There was a change to the recommended front air bag due to the weight on the front axle of most conversions. I would verify with Prevost that you have the right bags.

Yes, the tires generally need to be tilted out from the bottom unless the coach is lifted.

The front bag will come out without removing the A arms. I forget the magic twist that needs to be followed. Keep looking. You can also call any of the Prevost centers or Prevost PASS and a tech will tell you the routing of the bag.