I'm about to replace my timing cover gasket because it seems to be leaking. I have notice coolant leaking where the cover meets the block on driver side, it leaves a small puddle everytime. I was reading my Haynes book and it says this which I don't understand. "Cut two sections out of a new oil pan gasket to install between the oil pan and timing cover. Attach the gasket sections to the oil pan with contact cement". Do I need to buy a new oil pan gasket? What does this mean or if you have any pics? thanks