Tim,
Great points.  And thanks for checking on the blues for stains.  Now, I remember that many of my blues had staining as well.  Not to say that we won't find some red E98s with caramel/candy stains, but I don't think they're as common if there are any.  I think you're onto something with the reds possibly not going into packaging.  But, it's possible that other colors (sometimes) didn't go in either.  Even before the B.S find (

), I'm sure you remember Scott M's green set.  Nearly flawless and all of them found together.  
Anyone still have the green E98s with the "paid" stamp?
Rob