I routinely check my Phantom 3 Standard for shell cracks and up until today all has been well. However, tonight I see 2 cracks - one is somewhat superficial, but the other crack connects between 2 of the motor screws (or what i think is the motor screws). This is on the rear left arm if you're looking at it from the front. I've read a little about the cracking issue, but thought it was fixed with the new(er) P3 builds. Is it still safe to fly it? I've read of people ziptieing the arms to prevent flex, which I'm not opposed to. Has this happened to anyone else? If anyone's curious I have 63 flights, 5 hours of flight time and 77K feet of travel distance. I have never crashed, or had a hard landing. No problems until now (well except for inconsistency with the FPV range/GO app).