I have elevators plugged into 2 and 7, and am using pmix2. All is fine until I go to hi rate or from lo to hi rate - the travel is off by 1/4 inch or more. What is the proper way to set up split elevators when using a 7 channel receiver with a 9c tx. The plane is flyable as long as I set up lo and hi rate percent to be the same.

thanks,
Mike