Hi everyone, I'm newbie to this site. I have a 1954 Chevy be lair, 235 straight six. 6 volt with alternator, new battery. New cables ground and positive.also frame ground. The car starts fine when cold. But once I drive the car and its warmed up. When I turn it off and restart it cranks very slow as if batt. Is dead or engine is very tight compression. What could my problem be? Bad starter maybe. Timing off. Valves too tight. Solenoid bad. Please help me. I'm not a mechanic , but any help would be appreciated. Thank you very much.