ORIGINAL: Tired Old Man

It will be close to what you seek. The DA is not the lightest engine, but it's a good one for sure, so minor movement will be required. The 40% Giles does not like being nose heavy. A little "push" when inverted is about as close as you'll get to true neutral. A very little push...

Set all the batteries asa far back as you can before doing anything with rudder servo(s). You may find that two tail mounted rudder servos is what it takes to balance right. I wrapped plumbing solder around the tailwheel spring wire to get mine where I wanted it. I was too lazy to build an aft battery tray Do not use an aluminm spiinner. It's too much weight up front.