Personally I skip all dual rates and just apply Expo to all my controller surfaces with advanced controller settings. Applying 30% expo is about equal to 50% rates around centre stick but still allows full travel at full stick positions.
Your ws2000 dongle only supports 8 channels so you may need to make some changes in your dx6 Tx in order to honour some switches/axsis commands. Maybe have a look/google ws2000 setups with Realflight RC sim. These should be similar to what you may need to do with RC8.
I use a usb Spektrum Interlink dx controller with my win10 pc and this works very well with rc8. Not sure if it would work with a mac or not though. I have used a ws1000 dongle (older version of ws2000 but no real difference) in the past with my dx18 tx but found this a pita to setup and use.
Hi Tom,
Finally solved the problem. The correct and EASY solution is as follows:
1. Setup ALL dual-rates and expo(s) on your TX before "aerofly RC8" ever gets to see it.
2. Set all (Aileron, Elevator, Rudder) surfaces to 100% throw on your TX (expo doesn't matter) before "aerofly RC8" ever gets to see the TX.
3. Now when you "Calibrate" your TX you will be showing it 100% throws for all surfaces. Do NOT show it your Flight Modes or Rate(s) switch.
You are now doing all your dual-rates and expos from your TX, and NOT by "aerofly RC8".
Works great!
Bob