I broke the Dynamite last night after only 3 sets of singles and 3 sets of doubles. It was a little warmer last night and just perfect conditions for tennis. The Dynamite was feeling absolutely terrific, no arm issues whatsoever. My forehand was finally coming out of a 2 month hibernation and then the darn string broke. I'm guessing the tension loss helped. The final measurement I got off RacquetTune was 11.1%. One interesting thing about this string is that my 2nd serve was really good. I felt like I was almost hitting 2 first serves because of the confidence that I would not miss. Touch with this string is poor though. All in all an interesting string test.