As an overexaggerated example so it’s visible, here’s what I’m describing, as viewed from the front
You would want the X axis to match the left to right tilt of the work surface, which hopefully is actually much more level than shown.
You can’t do anything about front to back without shimming the mounts.
@eh9 Sure, that’s true. I think there are simpler explanations for @brvdboss’s issue before we need to invoke non-repeatable power loss behavior.