As you see can from the pics earlier in this thread, I too park my TM on an incline such that I back the TM uphill. I wanted to be able to open the TM while parked as well, so I built a riser from the tongue jack. I just took an 8-foot long 2x12 of pressure treated lumber, cut it into 1-foot lengths, and stacked them up with the grain changing direction with each board, and screwed them together as I stacked them. I neglected to glue them together as well, so some of them warped a bit, but it still works fine. If I did it over again, I probably would use untreated lumber on all but the board that touches the ground, to help prevent the warping, and glue AND screw them together. But I also live in SoCal, where it rarely rains.
See the below pic -- the tongue jack is not fully extended. IIRC, my driveway slope is about 8-9 degrees, which is fairly steep. I can verify that if you'd like to compare it to yours.
Dave
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2000 2720SL & 2007 3124KB
2005 Toyota Sequoia
Twin Battle Born 12v 100Ah LiFePO4 (BBGC2) batteries, 300W solar on rear shell, Link 10, Lift kit, Maxxis 8008 225 75/R15 E tires
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