Breaking a string every week and a half is really not a very fast pace. When you start breaking them every set and a half to two or every two days or so that's fast.
Mikeler's recommendation to blend is a good one. Try a poly in the mains with your Xcel in the crosses.
"i thought those were just a little harmless brown bugs, you know the ones take wings and fly? but it turned to be Flees." Fedace