I Just had my D string from my EB flats break. The actual meat of the string isn't even the part that broke though, it was the skinny part at the tuning end. I had taken my strings off to make some PUP adjustments and when I started to turn the tuning key about 4 inches just snapped off the end. I think EB strings are just more brittle than typical strings. Luckily I ordered from
Sweetwater, and they sent me a whole new pack for free. Strongly considering getting different strings though. Love the sound, hate the tension, especially when drop tuned. This is my first problem I've ever had with any set of EB's. Hopefully it'll be my last.