Bumping an old thread looking for a solution. I am having the same issue on my brand new 2013's. I want to say it's because the latch is sometimes not pressed all the way down, but then again why should I make sure to press the latch all the way down after strapping up? I too had a scary experience on the lift and numerous times down runs. I have noticed it sometimes happens after I tighten my bindings mid-run so it makes me think it may be from not pushing the tab flat.