put the folks "in the know" who are in a position to sell you something or charge you for a service at the bottom of the list
your best bet is to learn lots about the old trucks and the systems involved, I believe the 49 manual has a lot of systems theory explanations, you're never too old to learn
Bill
Where's the icon of a hammer hitting a nail on the head?
Surfing the web can be MOST rewarding. There's so much info it's hard to know where to start sometimes so I build a bookmarks folder for easy access. DON'T over fill it... just the cream!
I remember finding a page showing vacuum gauge readings and how to use one. Between that and a great tune up page I found from the 90's they made tuning the old engines FUN instead of a struggle figuring out what means what.
and forgive Bill's suggestion that folks are just out to sell you something... he can't help it when he's right.
