Hi I have had a 3 receivers stop working this year they are all the Hitec Supreme auto shift type. 2 0f them simply wouldn't link up to talk to the transmitter when powered up. The 3d one quit on my in the middle of a flight causing a total loss crash. These range from a couple years old to maybe 8 years old. Now I am afraid to risk any more of my planes with these receivers in them. Any one else run across this problem??? Should I be looking to replace all my receivers?? I am very nervous about this right now....[X(]