I had a Trek 7.6 FX this year - I learned how to ride on it, but it just was too long for me and I eventually sold it.

The shifters never did work well, and they were adjusted many, many times by two different LBS. Indeed they kept rehanging the RD and changed out the cables at least 4 different times. The brakes were quite soft - which I did not realize until I had another bike with which to compare. My current LBS head wrench said that Trek builds in something or another, I forget what he called it, into the brake system to prevent skidding.

I know you are looking at a Trek FX that is lower in the series, but thought this might be helpful to you.