I have my timing cover off, and got a gasket set for it. However, I can't figure out how to get the seal out of the cover so I can put the new one in. I went to autozone to return the damper puller I rented, and I asked if there is a tool to use to remove the seal.... as is shows in my manual.. and the guy told me he just uses a screw driver to pop it out. I tried that and I can't seem to get it. How do I do it? Or do I need to get a seal puller or something?