Been a while since I have been on this forum. Took the GT in for the major service at just over 26,000 miles back in January. They checked the valves (on spec), replaced the drive chain but the sprockets were good. The belt was fine with no signs of wear, but the rollers needed replacement and had been put in backwards from the factory (as was common on some machines). I'm about to turn over 29,000, but I am not putting the miles on it like I was since I no longer commute 70 miles a day. Love the bike, and it seems that much of the factory 'replacement' intervals for various parts is over kill. My dealer said to bring it back at 36,000 . . . or wait. The drive chain had a spot in it that was stiff. The dealer said that the chain is an o-ring chain and the lube that the chain runs in probably doesn't penetrate the o-rings. 26,000 + miles on a drive chain is really good mileage.