Purchased a used Phantom 3 (actually 2, but will get to the smaller issue later). Upon powering on the remote, then the P3, it takes several tries with the remote to get the props spinning. If I land, the P3 will resume operating as normal. Just the initial takeoff is the problem (I've given up after 15-20 attempts to fly, just to have it start after 3 tries the next day). I have no user guide, and have followed YouTube videos on pairing. Any tips? Thanks in advance.