I recently bought new servos and a new receiver in a kit and expected to simpily place the old crystal into the new receiver and let the servos work. i discovered that the servos will not move after the crystal is re-located. the crystal of the rx and the tx are the same (channel 42) and it did work with the other receiver. the new receiver and the old one are the exact same and i cannot figure out what is wrong. can anyone help me??/?