I brought my bike into Trek and asked if they could have my rear brake bleed and to see why they were screaming on descents. I left it there overnight and while it was there they not only did a brake bleed, but also replaced front and rear brake pads. They also replaced a broken spoke in the rear wheel! Their service was outstanding and they exceeded my expectations. I also brought the bike to replace a flat tire and they replaced it in less than half an hour! I would really recommend taking your bike to Trek.