Is this an Eflite 4-1 or an Esky 4-1?? If its an Esky you can buy it from Miracle Mart and for probably cheaper than HL. I'm avoiding Hobby Lobby because of the total screw me over job they did on me. As for the Eflite 4-1 I'd look here at RC because there have been others selling theirs off and on.

Rebinding is easy. Put the bind plug into the bat slot on the Rx. This is a spectrum Rx I'm assuming. Power up the Rx. On the Tx there is a trainer toggle. Hold the trainer toggle on and power up the TX. Holding the trainer toggle on thescreen will flash 'BINDING'. wait until it stops flashing and then its bound. release the trainer toggle, shut Tx down. Unplug the Rx from the power and remove the bind plug. Now you should be ready to go.

Try this before you go out and buy another Rx because I'm thining you don't need an new Rx but its only lost its bind. Hope this helps some

happy binding