I only plan of making pretty circles around the sky with this model. Maybe eventually, after I pull the engine out to use on a truly scale WWI model, I'll replace it was a gasser and then get those metal arms.

Just checked the RDS8000 manual. No prob. Dual elevator mixing by plugging the left elevator into the normal channel 1 and the right half into channel 7. This then allows separate adjusting of EPA, REV, CENTER, and FAILSAFE positions.