Is your RX the right "shift" for the TX. In other words if you have a Futaba TX, does the GWS RX have a big F on it? If it has a J on it it will not work because that is for a JR-Airtronics TX. Also have had some GWS RX with bad crystal plugs, try wiggleing it around and be sure to put a piece of masking tape over it so it cant come out.....

Good Luck
Bob

Also make sure the servo plugs are in the right way because they can be reversed and cause your problem