Posting this as a "warning". If you use a sludge vac on the top end after replacing VC gasket, you may develop a lifter tick. To stop this prior to reinstalling the VC use a syringe or oil can, and use whatever weight of oil you use lightly coat all along the cams to coat them. As the oil runs down it will coat the valves, lifters, and all that good stuff. Posting this because I had to remove my VC to do it. But the sludge vac is a great thing to have after a PCV failure.