The gears don't quite match up to the shifter any longer, so I've got several that just don't work. I'm guessing it's got to be due to the wire stretching or something. I keep thinking it would be awesome to buy another bike - I'd love to get a 29'er with suspension, I just don't ride trails enough to justify it. I'm into triathlons - so most of my riding is on roads training for a road ride or tri. Maybe I should rent a nice mountain bike some time and try it to see if I'd do it enough to make it worth it.