Pull down unit sticking?With the gasket base try some of that start spray stuff can't remember what its called, but its got octane in it. If you spray around the base plate where the carb sits the idle should rev up by sucking the stuff in at that point you know you have a leak around there. As for WAX stat there is a trick of chucking it into boiling water the heat resets the WAX and have known to sort it out? RJ's guide is still good have you gone through the lot? http://www.golfgtiforum.co.uk/index.php?topic=18871.0