Well, this afternoon I completed the procedure described in this post. All good fun (-: Thanks again the rubberowner for the photos and Sv_21 for tips, it all fell into place as I went. I ended up using "Permatex Hi-Temp Red RTV Silicone Gasket Maker" for the bottom of the spark plug tubes and the head cover, I'm still not 100% on whether this was the right / best option... A quick drive felt good, however I'm letting it sit overnight (to let the RTV fully set) and will have a good test drive tommorrow. The car has been mine since 1994 and now it's the daughters so I want it to be in the best nick possible. Cheers CamryBug