So I finally upgraded everything to latest firmware. All systems go according to PT2 and RC assistant softwares plus calibration. When I went out last night to fly unit calibrated fine, home locked and 8 GPS's. Fired up fine. throttle up and... not enough power to takeoff. Back to 'idle' speed and I realize it sounds like idle speed is lower RPM than usual. It's like whole system is like 20% power. Not enough to lift off. I plan on reinstalling everything when I get back this afternoon but wondered if anyone AFTER upgrade to 3.6 has had any power problems or any ideas of how to proceed. Thanks for anything.