[1930-Pickup]

What is your battery voltage at cruising RPM?
Are you using a 6v battery?
What is your generator charge rate set at?
Are your points burning faster than what you would expect?

I do suggest that you find the source of the problem before you replace too many things. That way you can be sure you actually fixed it.

Could be related to voltage too high. Railcarmover's idea of low voltage could also be the case, although I'm not very familiar with this (would lkie to know more...).