I thought this was interesting...
That IS an interesting article.

I too think I am lean, and thought so last time as well. After that article, I'm left wondering if the headers are the problem, and not a lean condition.

On the other hand, I think it is probably lean. Although, I'm not sure why, after doing the work on the engine, it is all of a sudden lean. The engine is running very smooth, so I doubt I ended up with a vacuum leak under the manifold or around the blower.

Currently my jets are stock. I have some larger ones, and will put them in today and see if that helps.

I've had times I'd like to have one of those laser temp guns (per the link). I may break down and get one.

Interestingly, the last time they were red, I had called Sanderson, and they told me the same thing: too rich. Everyone else told me too lean.

With regard to the question of boost: When I am WOT, it is 7#. But, at idle, while I watch the red hot headers, it of course is not pushing boost, and is running at just barely over 10" vacuum.

Timing is set at 10 degrees advanced.