Hi,
So, did you perform the following?
* Select a new unused model when you bound the suspect receiver to the new plane?
* Made sure the servo wires are plugged in correctly (hey, it happens!)
* Made sure the battery in the plane is in good shape (hey, it happens too !)
* Go to the monitor screen for that model and make sure the sticks are indeed moving.
Not sure how old your DX8 is but if you are trying to bind to an AR6000 it won't work .
Also make sure the frame-rate is properly selected.