Can the height of Kwikee electric steps be adjusted?

The electric step itself is not adjustable.
The mounting bracket is what changes the height.
I had mine revised when the factory one split on the corner.
It looks like a peice of Z bar. The mounting surfaceas are about two inches. The riser is what varies. Mine went from about 1.5 inches to about 2.5 inches. My sheet steel was replaced with a bent piece of stainless steel sheet.
Sounds in your case that the bracket needs to shortened rather then extended as in my case.