Could anyone help me and my son plumb his 292(integral head)factory air cleaner for proper cold weather operation.The air cleaner's vacumn thermostat and all plumbing were previously removed and we're trying to reactivate it.He runs the"Varjet"Rochester two barrel carb and it has two vacumn outlets currently capped.(labeled B and C).Does the Dampner door work off of metered or intake vacumn?(on that subject,how does one actually determine metered/intake(full)vacumn?)We are running the vacumn advance with intake vacumn...thanks...walt