Driver side of engine i have a regular twist on chrome breather, passenger side i have the PCV valve going in to the vaccum fitting on the carb. As i had a breather on the other side i thought it would draw false air/vaccum making the engine go lean. So i routed the PCV valve into the air cleaner fitting instead and plugged the PCV fitting on the carb.. How do i know if the PCV is calibrated to the carb?