the even worse problem is that with alot of the cork gaskets are too tall it keeps the intake from being pulled down properly so that over time the two front cooling ports at the head/intake junction start to leak. You want the clamping to be on the side gaskets not so much on the end corks. I agree on tossing the corks & using the right stuff. Just clean the metal sqeeky clean with brake kleen so it wont come undone