1. obtained a P1 at a great price, I'm trying to give it an overhaul but the previous owner did not take care when uninstalling the shell screws. need sizing help.. what size thread and length is the leg screws? 2. when i connected the P1 to naza software and watched the main screen, the controller values and x1 jumps around a bit .. I'm sure this is not normal, right? this was after calibrating ... i had a spare p2 controller and tried to bind and pair but the p2 controller will not bind to the p1.. any insight? is the p2 controller not compatible? does anyone have a spare tx ? i need to buy a p1 transmitter but how- need old stock - ? edit: I bought a refurb sr6 controller will update when it arrives.. 3. (power down question) when turning off the phantom after landing by holding both sticks down and in the phantom surges instead of stopping power . the only way to kill motors is hold left stick down all the way for a full 10 seconds (if i let go of left stick prior to 10 seconds motors idle up again). what is the proper power down procedure. on my p2 anytime both sticks are held down and center for 3 seconds motors turn off completely. thanks for the help guys!