Never been a string breaker, almost always use SPPP for several months until I decide to cut it out, broke it maybe 2 or 3 times ever (using APDC). Just started using an Aerogel 4D500Tour and liking it but broke SPPP (50 lbs) on the second time out. Thought it was a fluke mishit, restrung with WCSS (50 lbs) and broke it right in the center on a clean forehand on the 3rd time out. Two flukes or are certain frames that much more prone to breakage? I've been using APDC+ which also has an open string pattern and is also stiff and never had a problem so I can't just be those factors. Thoughts?