I have just started using a Turnigy 9x Transmitter with 8 channel and 10 channel Receivers. (I did ask why they didn't make a 9ch Rx but got no satisfactory explanation). I have found the kit to be very good value for money but each time I select a different model, I find I have to re-bind the receiver. Not a big problem, but inconvenient. Is anyone else having the same problem?