What are the essential references required to maintain and tweak a Vanagon
Westfalia?  I see lots of people laud Bentley, and something else called
Etka.  I am not a "let's drop that gas tank and fix the cross over line"
kind of guy.  However, I do like to understand how it all goes together and
works.

Along with you studied opinions, please provide a source for your
recommended material.

Cheers,

DJL

86 Westfalia
Bedford, Nova Scotia