Typical really. Try to get rid of a minor flaw, and it ends up producing a major flaw (and it happened twice with both machines, so it is major).

Come to think of it, one of the twins flipper looked rather...not well in that mayhem qualifier. It didnt appear to want to go all the way down, which is why trying to flip the twin back over was probably a massive mistake. Nudging it back over may have worked much better.