I bought a pair of MX88s with K12 bindings this season. I put a few days on them about a month ago, and on the third day, I noticed that my bindings weren't aligned with each other (i.e. the toe piece on one ski was more forward than the other). My initial thought was that the bindings were set up wrong to begin with, so I brought it to a shop on the mountain (I was on vacation) and they made it close enough to finish out my trip on them. When I got back home, I brought them back to the original shop I bought them at, and they carefully set them up to be perfectly even, marking the spots on the bindings with a sharpie. I got the chance to ski on them again this weekend, and by the end of the day, the toe piece had moved about a full centimeter forward. The heel piece looks to have stayed put, so I'm going to assume that the toe piece of the binding is being pushed forward as I ski.
Has anyone heard of this issue before? I don't really know anything about mounting bindings, but my guess is that the toe piece is defective? The shop rep that I usually deal with is out the next couple of days, and I want to wait to talk to him before I do anything. But I thought I'd reach out here and see if anyone has had a similar experience.