I bought an inexpensive 700c wheelset to commute to work on. 105 Hubs, Alex R400 rims and 14g spokes that have H on the heads. I have popped 3 drive side spokes in less than the first 100 miles. The spokes are breaking at the threads. This is driving me crazy because the hubs spin so nice. Anybody know what kind of spokes these are ? I suspect the spokes are the problem, just poor quality. I have a good LBS and hopefully they can pinpoint the problem for sure. Don't want to throw good money after bad. any advice would be appreciated.