During preflight I noticed a crack in the one strut arm. I did buy the Inspire 1 v2 used, but thought i checked everything out. There are no signs of rough landing or crash. Ordered new ones, just wondering if anyone has any idea what could have caused it? I did detache it from main arm and there was no bind or twist on it. Included is a picture, the crack is by the body brace, kinda hard to see. Thanks for any fresh ideas.