I achieved a new personal best yesterday with my P3S, 9733 ft! The only mods I've done are a homemade windsurfer ( How to build your own Windsurfer Antenna ) and the Magic Power mod. I'm still wondering why my video signal actually got worse when I turned the P3S back towards my direction. I'm guessing it has to do with the placement of the antenna in the legs? I may try a similar flight today and turn on course lock so I can ensure that the back of the P3S is facing me on it's return flight and see if that makes a difference. Anyway, I'm pretty impressed with almost 2 miles basically stock.