The best way to level my minnie winnie 31C

[Capecodjohn]

I have tried several methods to level my 33' RV. It is 14,5000 lb beast.

I tried camping world yellow stacking leveling blocks and some of them pancaked. I bought Andersen Hitches 30,000 lb leveling blocks. They are super durable and easy to use........But I can only raise the rig about 4-5 inches.

What other methods do you all use when you need to raise the rig more than that hight? I have seen some sketchy ways that folks come up with!

Any ideas are appreciated!

Thanks. Cape Cod John