I upgraded from my Spektrum DX4E and AR400 about 5 months ago to an OrangeRx TX6I and OrangRX R615X receiver. Ever since, I have these random losses of control. They don't happen every flight, and more on some planes than others. Sometimes I'd fly out really far from myself, turn around, then lose signal when I'm more than halfway back. When it loses signal it more often than not gives control input instead of activating FailSafe and gliding down, causing one of my planes to roll upside down and pull up (the new down). I asked Hobbyking for a replacement receiver, but it had the same problem too. I then asked for another replacement, and the next one had the same problem! I've lost count of exactly how many, but there were more after that. One of the receivers actually had a different problem, where it only had around 40 metres (133ft) range. I decided to borrow a friend's DX4E to see if maybe it was a defective transmitter instead of the receivers, but so far it is having the same problem too. Has anyone had this problem before? Does anyone fly with OrangeRx R615X receivers or the TX6I? This issue (and my stubborness) has destroyed my first balsa plane that I built with my dad, an FT Mini Arrow, an FT Goblin, and an FT Simple Scout so far. Any help would be HUGELY appreciated!!!