So I noticed today some cracks on the bottom of one of the rotor arms of my P3S (see picture). I suspect it happened months back when I clipped a tree, but did not crash. The P3S self stabilized and I didn't think the impact was that severe. I have flown the craft several times since then. I don't see any flexing in the cracks when I apply vertical force to the motor itself in a direction perpendicular to the direction of the cracks. Should I send it in to get this fixed or just keep an eye on it for any progression after every flight? Any DIY suggestions on how to patch this up, e.g. epoxy/fiberglass patch, etc.