I've had my GIant Trance 2 for almost a year now and I love it, its perfect for the Dam and also went beautifully down at Stromlo, Sparrow and Madura a while ago. Probably ride 2 -4 times a week, depending on work and weather so it gets a good going. Anyhow, I'm not too mechanically minded, but did notice the gears cross chaining under a bit of pressure, eg going up the pinches or half way up a hill, so took it to the shop to get checked.