David, wish I could help you with this one, but aircooled are not my cup of
tea. However, I'm forwarding this to the Type2 list, and to a guy named
Parker Stolp, who is on that list, and is also "All that and a Bag of Chips"
when it comes to those type4 engines. In fact, I know he also has a ' 78
Westy, and would be more than happy to help you. He just don't know it yet.
Ya see, the little pain in the ass is my son-in-law, so I'll get on the phone
to him now.
Good luck,
Beckett