When I go into my HD settings where you can switch from Auto to Custom channels I rarely see any bars over any of the channels, be it stable or unstable. I tried switching to Custom to change to 4mbs but wasn't confident enough to have a good channel to select as none of them had any bars really, only a blip here and there. Am I missing something? I flew this evening with clear VLOS and had my first weak signal at 256 meters in Auto, the signal came back but I returned just in case as it was my second flight. Should I be seeing bars over the channels to indicate their status?