I'm late to this news and am glad to hear things are looking up. John, here are the details of what Drs. Click & Clack did for you:
http://www.ehow.com/how_2110646_replace-valve-seals-engine.html
(sorry, couldn't resist)
http://www.ehow.com/how_2110646_replace-valve-seals-engine.html
(sorry, couldn't resist)