I have a site that I will need to fly using the GS feature, so last night I decided to play with the GS having never flown that way before. It was dark out, so I just wanted to simulate a run through with the bird sitting on the backyard table and props off. To my surprise, I only had 5 sats showing last night when I have never had less than six since I bought it last May. I then noticed the count was fluctuating every second or two between 5 and 3 sats, with a brief 6. So I couldn't play with the GS. The erratic nature of the number of sats detected really surprised me. The sky was perfectly clear. I had flown a large site on Monday with absolutely no problem at all with a consistent 8 sats. Never had a crash and have been hand catching. Is it possible most satellites that night were near the horizon and I was picking up weak signals? Walking it from the back of the house to the front yard and turning the bird in different directions made no difference. I'll try it again today at lunchtime.