Bought a 1936 Fargo truck about 3 months ago with a mid 70's 318. Runs great, but have had problems starting. Was told the ignition control module had to be grounded to the body. It is fastened to the firewall and bolted bare metal to bare metal. Replaced the module with a new one right after I got it. Has quit on me again and checked the ground which appears to be good. New to the Mopar ignition system so any suggestions?