Just got my 172 back from a timing belt service - £££ - and the throtle idle valve is kapputcan they be taken apart and rebuilt or is it a case of handing over the remaining w/e beer tokens to Eurocar parts?in the unlikely even someone's got one spare I'm more than willing to be their lifelong friendalso the car's got a magnex exhaust on it, which is a bit too loud for an old duffer like me - anyone car to swap it for a standard cat back pipe?