I've been riding for 30 years and have never broken a spoke road riding. These wheels have Sapim straight pull double butted spokes. 2012 model with 3000 miles and a spoke broke at the head on my front wheel. I've tried to search the site but can't find some comments I've seen related to these spokes breaking. Anyone else have this issue? Should I be concerned, or do you think this is an anomaly? I'm 170 Lbs.