I bought my trek new. It is a 2100 WSD. It has never shifted smoothly. I can barely get into the big ring on the cassette. I have to use all my strength on the shifter. I have a triple in front and of course I am not in the big ring in front when attempting this. I'm in the middle. Then one day it started making a funny noise from the back/cassette area. I had to have the freewheel (I think that's what it was) replaced. Warranty thank god. So I sorta feel like it's a lemon. The fit is fine though. So I am no trek lover.