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First potential lead for this problem:
I've done the two valve inspections myself so far on the bike, both times I used the video DIY here on ninjette which now no longer exists. If I recall correctly, the proper procedure was for both of the lobes on the cams to point away from each other when at 2|T for both cylinders, correct?
So this meant one rotation around, at 2|T the cylinder 1 lobes would be in inspection position, and the next rotation around at 2|T the cylinder 2 lobes would be in inspection position, right?
It's been a little bit, but I don't remember using 1|T. Now it appears that things are exactly the opposite. The only way to get opposing lobes in the bike is at 1|T. It seems extremely coincidental that things somehow got shifted around exactly 180 degrees but I'd imagine it's a problem.
How this happened I have no idea, a loose cam chain perhaps? Even if that's the case, it seems highly unlikely that the chain would catch again at exactly 180 degrees around. Remember that I rode the bike for a couple thousand miles since the last inspection without a problem.
Thoughts?
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ATGATT 
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