His problem with vacuum is he is at 6000' in altitude. There is no air.
And I did not know I was so pessimistic about things that you would automatically assume I was going to disagree with you.
But just FYI they do not like a lot of timing? But a bit more than Mercedes ran them at. And at your altitude I am sure a few degrees more will help a lot. We used to do that all the time for the older cars that you could adjust them on when I lived there.