After I "lost" my first P3S, I bought a replacement and, as a result, I now have two r/c's. The new outfit works perfectly so I decided to try flying with the "old" r/c with strange results. It linked easily with greens on both the drone and r/c so I took it to a local field to test it out. The first odd thing I noticed was that the motors would not start with controllers pulled down in the usual way so I tried auto take-off and up it went and hovered quite normally - then the troubles started. Some controls appeared to have reversed with "up" going "down" and vice-versa - in fact all the controls went haywire, some changing direction with increased pressure on the controls resulting in the drone zooming around like a mad thing. I hastily managed to juggle the controls enough to get it on the ground but then the motors would not stop resulting in an undignified flip-over! Fortunately, there was no real damage and the drone flies normally with the original r/c. Can any of you droners out there suggest what has gone wrong and what, if anything, I can do to correct matters?