Ok I know that Ko, Air, And Jr all work on a positive shift and Futaba and Hitec work on a negative shift which leads me to my question.......Lets say I have a Hitec radio, will a futaba reciever work as well as the hitec? Also lets say I have a JR radio, will a KO or Airtronics receiver work also since they are on the same shift??

Now I know that most companies will tell you to use only the receiver that is the same as the radio but is this really true. I have a friend that uses a Ko radio and all Jr receiver's.