Hi guys, recently I've flown a solo with Rev A GPS so I took it to my nearest park to test fly my 2nd Solo. I done a compass calibration and level on the spot the solo didn't perform as well as the mRo GPS u-Blox but it was flyable, the solo returned home as expected but not as smooth as mt first solo. I left went home then I thought I should re test in my back yard so when I fired up the solo the GPS count was going from 9 to 7 back from 7 to 9 I should have known better, I pressed the fly button took off gently the solo was drifting bad left and right all over the place I ran up to it and held the solo down on the concrete floor so stop it from hitting the brick wall by doing that I sacrificed my thumb by cutting it into 3 places. What could have caused this? could it be the big fluctuations with the GPS count? could it be a wifi interference? I just cant seem to figure out what might of caused this weird flight behaviour. On my first solo with the : mRo GPS u-Blox I never experienced such issue though I never would have thought the Rev A GPS would be that dangerous. Any experienced users could tell me about this bizarre behaviour I experienced I will appreciate it. Luckily no one else was next to me thank god for that though the thumb did get slaughtered.