The XACTA doesn't have leveling feet??? I'll be darned, the manual doesn't show any. That is awfully optimistic of the manufacturer. With a broad enough surface you can support quite a bit of weight on wood shims, plastic shims, etc.
My workbench is about 300lbs and has a regular ole door shim under a rear foot. I thought I would replace it pretty much right away but it's still there and still in one piece(?).
Don't stress. Close your eyes. Think of your saw. Ahhhh, there you go.
"A hen is only an egg's way of making another egg".
– Samuel Butler