it's more like a grind mark. it is from a stone that became trapped in the canopy cover. I use Bruce's cover, and it has been very good, but if is windy and gets dragged on the ground it can pick up a stone. let's be careful out there...
Steve Melton
N531EM, RV9A, Superior O-320, WW 200RV prop, Slick mags, CHT 330F, EGT 1300F, B&C, 1300+ hours
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