I live in the U.K. and would like to get a Tamron SP 90mm f2.5 serviced and cleaned. Well cleaned mainly, the working status of this lens is great... But I can see a hair(how the heck?) and just one mould spot on the inside, very naughty of the seller either not having seen them or declared them! Anyone know who/where I can get good cleaning at a reasonable price in Britain? Anyone in Britain had this service that could suggest a guide price? And finally; with the correct tools and a careful approach, can this be attempted by oneself?