Sneaky trick- - - - -stack up 2 or 3 layers of 2X6 lumber with 4 inches of offset on one end like stairsteps, join them with long wood screws, and drive up onto them to raise the frame high enough to get a jack underneath. We used to carry a couple of stacks like that to help level travel trailers and motorhomes so the LP gas refrigerator would function in a campground.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!