Bungy...im far from a mechanic so wouldnt know where to start removing a head gasket. I havent vag com'd it, not sure if garage have, they did diagnostic check on it, it just came up with a misfire code, not sure if it was a vag com scan though. As i said i know sweet fa about cars. Starting to wish i did though. The garage have quoted me £200 to remove head and have a look. The other cost comes from either stripping the head down, finding the problem and fixing it, or sending it to an enginering firm to do it. This is if it is a valve guide coming loose, if not then fuck knows whats its gon