Allen,
Just to complicate the matter. I have an assortment of blocking options. I do have 4X4 and 8X8 pieces of wood that I use to put under the generator framing, or the rear hitch IF I am only going to raise the coach with the air system. The 20 ton jack stands will not go under the rear by just using the air bags. I have two twenty ton bottle jacks that I use on either the frame rails or axles depending upon what I want to do and then I use the twenty ton jack stands.
I personally don't think it's the best idea to use a bottle jack as the safety mechanism. They can blow a seal or leak down.
Another option I have used is stacked pieces of 2 X12 as ramps, and then use the jack stands.
I do know the coach is close to the ground, getting under there with a creeper takes some raising to have any room to work.
I have spent so much time under mine, the neighbor thinks that's where I take my naps.
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Richard Rhonda Ty and Alex Entrekin
1995 Newell # 390 DD Series 60, Allison World Trans
Subaru Outback toad
CoMotion Tandem
Often wrong, but seldom in doubt
Rhonda's chronicle https://wersquared.wordpress.com/
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