Grit dog wrote:
30” rise over 30’ is 1:12 or 8.33% slope or about 4.5 deg slope.
Not a big deal imo. Other than loading and unloading. Might be tough if the truck is a tall 4x4 and the back end is cranked up with air or springs before loading.
If it looks like the jacks don’t want to sit flat when you level it out , may want to shim up pads under the jacks.
It’s not ideal for loading and unloading but the camper won’t care when you level it out. Don’t tweak the jacks. 1” shim under a 12” pad will level the jacks if your slope is accurate.
I believe this is the key. The metal pads on the jacks will try to lay flat on the slope which will force a bend into the jacks when the camper is level. If you can shim the jacks the camper won't know if the jacks are sitting on flat but different elevations.