I have a 2006 Trek 1500 wsd which i love dearly and it rides like a dream. BUT, the gearing is noisy. There are very few gears that allow silent riding. I have had it to the shop several times for adjustment since april and I am beginning to wonder if this problem is specific to the bike. I have not had this with any of my other bikes. Maybe I should find another shop. Anyone else have this problem?