Just a quick one so that you lot don't get caught doing the job twice like I recently had to!
As is the case now, whenever I change a belt I order up a belt kit with pulleys etc included, in this particular case the X18XE1 kit comes with the usual 2 idler pulleys and a tensioner pulley with a new bolt that is Torx 'flat' head. Looked at the new bolt and thought, "I'm going to keep the original Hex bolt as it's easier to use a socket on", WRONG !!, although not immeidiately obvious, the new tensioner is thicker in profile so if you use the old bold it pushes the camcover outwards so that it fouls the crank pulley making a very impressive noise as it does , which means you have to take the whole lot to bits again to fit the thinner bolt !
Gates don't help either as they only include 'general' not model specific instructions with their beltkits, still, you live and learn I suppose ?