I have been flying the Mini 1 for 3 or so years and have experienced The "Weak Signal, adjust antennas" many times but it is usually quite a distance away, 1,500 feet or so. I just got the Mini 2 and it has no antennas and I receive the message 3 times in ten minutes of flight at 300 feet away. Since I have no antennas how do I fix this?