I have a problem with an oil leak which I had thought was related to a bad cylinder head gasket. I have replaced it but from the picture it appears that the circle gasket to the left of the cylinder head is leaking. Does this gasket pop out with a screwdriver or is it held in place by the mounting piece above it with the two screws? http://s102.photobucket.com/albums/m94/npolite/?action=view&current=IMG_0034.jpg&refPage=&imgAnch=imgAnch3 Thanks in Advance, Nick