I have this 1967 Dodge A100 pickup and the ignition switch on the dash is in need of help. When I try to start it, I SOMETIMES need to shove in a paper clip to get the tumblers out of the way for the key to go in (I know that it needs new tumblers). Once I get the key in, it turns o.k. Now...I will start the truck fine...go somewhere (maybe a 20 minute drive) and stop for about 1/2 hour. I will try to start the truck and the ignition turns, but the starter will not even turn over. All of the connections are clean and tight (starter, battery, ignition switch, etc.). My question is this: Does the fact that the ignition switch needs new tumblers for the key, indicate that the starter may not turn over because of that? Do you think that it is the switch itself that is bad and not because of the key tumblers?