We are using a 6ex-2.4 as a master trainer to 8fgs as slave trainer using standard buddy cord. Everything works with 2 exceptions. We are unable to get dual rates and expo to work on the slave or student transmitter. We have the 6ex setup to control the plane and it works perfectly with the instructor operating it. When he pulls the trainer switch forward the student transmitter operates at high dual rate without expo. Any suggestions as to how to make this work would be appreciated! Thanks in advance.

Jim