I was out on my ride today and when I was down shifting I felt something on my leg. I looked down and my chainring guard was broken and leaning against my calf. I was a pretty good ways from home so I just rode home like that I don't think I'll have any mechanical problems due to the exposed chainrings, but I wonder if I should get in touch with Trek and tell them about it since I've only had the bike since May. I've never taken the bike (a 7.2 FX) off road or abused it in any way and can't for the life of me figure out what would've made it break. Is it something I should be worried about? Should I call Trek and get a new one or just forget it?