HI GUYS LOOKING FOR SOME INFO ON HEAD GASKET RELACEMENT ANY ONE DONE ONE? DO I NEED SPECIALIST TOOLS ETC? ITS LOST COMPRESION IN CYLINDERS 2 AND 3 SO IM HOPEING ITS GASKET NOT VALVES OR RINGS. ANY INFO OR ADVISE WOULD BE GREAT AS IM NOT UP FOR PAYING MY LOCAL SPECIALIST 2K PLUS!!!!