Anyone ever had this issue? About 2 months ago I bought a brand new Trek Superfly Elite AL with Shimano SLX components. Today I was riding with my buddies and while climbing a hill and going over a root I hear a loud pop. I stopped and checked the bike over and I see nothing broken but when I pedal, the rear cassette never catches. I can pedal all day and never move. Luckily I could still coast down the hills but I had a lot of walking up hill on my way back to the truck. Anyone ever had this happen? I will be taking it in to my LBS on tuesday to see WTF!