KENC,

You are the man. This is exactly what I suspected. I found a picture of the complicated linkage arrangement online, and a important spring is missing from the setup my friend has.

With the spring missing, the lash up makes no sense..with the spring, it does...now to find a spring!

http://chevy.tocmp.com/1929_57chevyparts/57cmpc0354.htm


Thank you for your help.

Stuart