Hi, i've recently bought my first GTI-R and love it. Just put a k+n, dump valve and s/s exhaust on it so it sounds sweet, apart from the engine which sounds like a 15 year old fiesta. Been told that GTI-R's are known to need the valve clearence's doing (shimming). Im pretty sure it is that as it sort of ticking right at the top of the engine, just under the rocker cover. Does anyone know the best place to take it and what its gonna sting me. I live in March which is in Cambridgeshire. PLEASE HELP. Thanks. Matty B.