[villagetinker]

Originally Posted by biker1

I have seen sliders on the side walls (with a slope) installed with a shim under the bottom plate to level the sliders and then a decorative cover over the shim. You wind up with a bit of a lip but it appears to be acceptable to those who have them (several neighbors).

I had not seen that, and our Gardenia has almost a 2 inch drop over the 13 feet width from the house, so that would be quite a set of shims in our case. I actually had to pour a special pad to level the hot tub, 1/2 inch thick close to the house, and about 2 inches thick away from the house, over an 8 foot distance.
The devil is in the details, thanks for the possible option.