Well guys, I have been ragging the living daylights out of an A2 over the last two days. I built a 550 to use as a test bed (on loan from Heliguy to test A2 resilience) and I have even done 4 docile flights on my Gryphon frame. Yesterday the A2 on the 550 flew perfectly for the first flight and then I had to reboot it 3-4 times for the second flight as it was not getting GPS lock where as my WKM equipped Skyjib 8 picked up over 7 sats almost immediately. Today however I manage about 6 flights on the 550. These flights involved things like a constant POI flight to see how well GPS was holding; flying at full tilt in Atti to about 450m away and then hitting return home; flicking modes between GPS, Atti and Manual; flying in GPS whilst stick stiring (as if I were trying to piro flip the beast); I even grabbed hold of the thing and pulled it away from its position and it fought damned hard to go back. On release it went back to its position very aggressively; I knocked it on the yaw axis, hard which looked as if it nearly did overwhelm it but it didnt, not even of the 4th attempt. Today, the 550 was rock solid. On the Gryphon it also flew very well. Not sure I have the confidence to fly the Gryphon too much yet. Last week I personally witnessed 3x A2 GPS failures.