My Trek 7.3 FX is four weeks old today. I had it in to the shop at the beginning of the week for its 30 day tune up because I had about 140 miles on it and figured it was a good time. I'd also been experiencing some real slight rubbing on the front tire that I couldn't get to go away. From what I'd learned so far, I thought maybe one of the spokes was loose or something. I'd had the bike upside down and could identify the area of the wheel that seemed to be rubbing. I mentioned the front tire rubbing when I dropped the bike off, but I really didn't get to demonstrate what I'd seen.
I picked the bike up and the guys didn't say anything about the rubbing, but it was notated on my workorder, so I figured all was well.
Rode it on Wednesday and it was doing the exact same thing. It's ever so slight and just in the area of two or three spokes. I looked at the park tool website and tried to figure out how to adjust the brakes, thinking maybe a pad was a little tight or something. I thought I made it better.
Tonight it was squealing! When I got home, I turned the bike upside down and it's squealing in the same area as it was rubbing. I've fiddled around with the left pad that seems to be rubbing and just couldn't get it to brake smoothly. I can every so slightly hold the brake in and the only place that will rub is that one area. I took the pad off and was kinda surprised. It seems like the trailing edge is starting to flatten itself out. Here is a picture, hopefully you can see the bottom edge is pretty flat instead of having a sharp corner. I just used my phone, I can get the big camera out if necessary.
Is that normal? Is anything that I've noticed normal? Should I just adjust it until I can get it as smooth as possible and live with it? Should I take it back to the shop and expect it to be fixed under Trek's or their warranty?