Ha, I think I have it now. And sadly it looks like the chain is perfect.

Now bear with me here, as I sit turning the pedals while looking very closely at the cogs it hangs on only one tooth. This is on the first (largest) gear. It appears the tooth is leaning or rather twisted towards the spokes. Bikewer was saying that one tooth would be leaned to aid in shifting but wouldnt it lean the other way if that were the case?