Air Bag fill or Jacks up First

When we first started out in our coach I would bring the jacks up then let the bags fill. However, HWH recommends allowing the bags to fill prior to lifting the jacks. I've been doing this the last few years and the only issue I noticed is that, depending on the grade, I'll sometimes get a good "pop" once enough weight is removed from the jacks and the coach can "slide" on the pads a few fractions of an inch as the suspension moves through it's arch. The only times I don't do air bags first is if we are on a terribly unlevel site and one or more wheels are off the ground.

I'd have to go back and check my manual, but I don't recall Newmar saying to do it one way or another.