My P3A has around 800k ft on it, with no problems except for the occasion signal issue. Recently, I have noticed three things: 1) When flying in a straight line, without touching the left stick, it seems to turn slightly right. It is not drifting and is always in P-GPS. It just turns a little, requiring I make an adjustment. I have to be moving, though. When I stop and hover, it always locks in position. Any thoughts to that? 2) The rear motors are slightly warmer to the touch that the front motors after a long flight (20k+). I ALWAYS flight forward, so I am assuming it is because they are doing more work. Would that be accurate? 3) The right rear motor is slightly warmer to the touch than the left rear motor. Again, it is SLIGHT. The motors are never too hot to touch and hold. It is just a minor (perceived?) temp difference. Should I be concerned? For background, after each flying session, I pull the props. I verify the motors spin up at the same time, and I listen for any strange noises. There are none. I also hand turn the motors regularly to feel for binding. I have not felt any. Probably paranoia on my part, but most people here have a lot more experience than I, and I appreciate the input and advice.