While I'm not using anything as sophisticated as the X-scans, I do have some similar type fixtures: Electra, Reflex, Rover II, Barrel Flex.
There is probably a screw located behind the mirror. You'll probably need to loosen it up a tiny bit, then adjust the mirror to what appears to be a "best match" and then re-tighten. Warning: ADJ may have used some sort of thread locking glue, so it may be a bit difficult to get that screw started. In fact, I'd be surprised if ADJ did NOT use that thread locking glue. Just another word of caution: if ADJ did use that glue, you'll never get the screw in that securely again UNLESS you apply some fresh glue to it. Don't just use any old glue either, there are specific products for that. I'd even go as far as to complete remove the screw and purchase matching glue. it comes in various colors for various strengths. I bet ADJ is using the blue one.
I'm notsure if this voids the warranty.