All Plugs Fouling on Right Bank

MOPAROFFICIAL said
While its idling, can you cover the carb with your hand and kill the motor ?

I haven't tried that. What would that indicate?

moper said
What do you mean by "it runs best with the mixture screws at full rich"?

That means the two idle mixture screws next to the pcv nipple are turned full counter clockwise, which is the richest setting.