Might check the rim .. could have a small indent or defect that's making that area sensitive. As far as getting flats, I think the road has more to do than folks would suspect. I had one commute where I got flats ALL the time. I started carrying 2-3 tubes with me at all times. About 2.5 years ago, my commute route changed (same tires, distance, bike, etc.) - just to different destination ... haven't had a flat since.