Starter solenoid issues

I have seen clamps and battery posts that looked so clean you could eat off them and they would NOT LIGHT THE DOME LAMP

Get a battery post cleaner and clean them up.
Just days ago, my junior opened a new package of the red and black painted replacement post terminals. Only parts/areas not painted was hardware and cross strap. One would think the hash marked cavity where wire lays would have been left bare. I never cared for those chunks of lead anyway, but... leave to the Chinaman to make bad worse.