Just got the P4 last week. I really like it vs the P3P but I have a couple issues. The first and most annoying, I am constantly getting motor overspeed warning whenever I am in Sport mode and at full speed while trying to climb even a little. As soon as the overspeed warning comes on the drone steers right until I stop trying to climb. Anyone else had this issue? Second is the rudder sensitivity. I find it difficult to make smooth transitions when using rudder and strafe. The P3P had no issues whatsoever. I have played with gain but it has only slightly improved. Still not happy with it. I've worn out my P3P and I really like the new model but these two items are quite annoying. I'd love to see if its defective or normal.