I have a friend who is contemplating a LHT, but his concern is the 9 speed chain. He owns and rides older treks, 2 - 520's and a 620 and has never had chain failure. I had a chain break on a 9 speed on my first tour. He is thinking of building his up with older 7 or 8 speed gears. ANy thought, or experience, on this would be appreciated.