Interesting thing just happened to me. I was flying in FLY with both fronts white and both rears red...normal, all good. Was getting ready to do a manual landing (still in FLY) and noticed that Solo started responding very erratic/unstable to commands. I was about 6' from ground, trying not to crash, but was able to briefly look at controller to see I was still in FLY and GPS was locked in. While trying to get control so I could land, I did notice that both rears were red...the front right was white, BUT, the front left was red. I eventually moved over some grass, and had to make a hard landing...Solo tipped forward, but no damage due to being in grass. I powered Solo down and back up again and all is back to normal....any ideas?