last test (least its nice outside here in texas - in 60s) I went in with a long socket extension and poked wires - all of them. No changes. I also made sure the battery cables were tight. No changes.
Is it possible that fuel is sloshing about in the carb bowl causing the problem? I just had the carb rebuilt.
This is a 1969 292 with a rochester one barrel #70045xx (xx = unreadable) and looks like:
blury carb photo