Well ,there you are Dick!

Good to see your still loyal to your old methods ,it makes me feel smart!

A foamy is a poor example of an aerobatic model.
There is no airfoil to produce lift ,so just like your methods on a pattern airplane ,you have to run the c/g way back usually 30-35% to induce incidence ,and set it up zero zero zero to get it to drag huh (fly) around. it seems fine ,till you unload the wings , Knife edges,up-lines or, overload them in slow landing,Snaps ,Spin entry`s then they tip stall because in reality your tail heavy.

Zero Zero Zero,,,,,This is why the old designs had so much mixing, in reality it`s Just poor thinking that seams to make sense.
Try a 1.5 snap on this setup and see what happens (you have to fake the entry and exit just like the IMAC guys do), try a reverse spin and keep the airplane on track try a knife edge loop on left rudder , you see we fly much more complex stuff now days. You would be very surprized at the mixing Andrew has on his airplane,only he can fly it well,I trim Sparks all the time, (not his design)
but, I can tell you factory settings are way off base.

The only way the above method would work well ,is if a 2 meter model could fly at 5 pounds , the only reason we can get away with it in the flat foamys, is they are very lightly loaded they are really just kites with motors super light , and way overpowered
and they mix even worse than a pattern plane.

Bryan