Hi Rusty,
You will need two Pmixes for this.
Go into your first Pmix, make the master Offset, the slave Flaps, then at your percentages, you will make this first mix +50%, with Link ON, switch C in the center position.
Next go into your next Pmix, again make the master Offset, the slave Flaps, and at the percentages you will make this on +100%, with Link ON, and now switch C in the down position.
I believe this is what you are looking for.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (
http://www.futaba-rc.com)