When I was a kid our basement floor shifted (bentonite clay). A contractor came in and fixed it, I think a combination of mud-jacking, and a leveling concrete thin layer. Ours was pretty dramatic, I only mention it because there are contractors out there that specialize...
Level the floor
We've just moved. The audio playpen is the basement, which has an issue I haven't dealt with before: uneven floor. Left-right is level, but front to back there's a steep slope. At a distance of 18 inches, the slope is about one inch.
I figure others have dealt with this enough that there's "a way" (or an eternal argument...). Educate me?
Available equipment would be fine; surprise uses of stuff would be terrific.
Thanks.