Any books on vacuum advance and timing???????

Because we all know books are exempt from varying opinions and misinformation, right? :D

As with anything, you have to consider the source obviously.

True enough. I figure that if someone went through all the time and expense of publishing and distributing an actual physical book, is able to sell them, goes through a couple of editions and /or printings, they have a little more credibility than anyone who knows how to post something online. Sometimes.