Still alittle unsure of myself on what I need to do but I removed both valve covers which the heads have alot of sludge and build up in them, I picked all kinds of junk out of the holes where the head bolts are. I am not sure on the location of the oil drain bores inside the heads.....? From what I see if I could find them they should definitely be stopped up....The oil is being pushed out thru my crankcase ventilation hoes and into my throttle body. I am not sure what areas to check other than something in the head being stopped up. How do I check for proper crankcase ventilation?