Thank you Don.. Don and I have a long history of sharing. Don loves to get into the nitty gritty of things. It's all good.
Except, 40+ years in engineering has taught me that overthinking a problem does not necessarily lead to a solution :P.
Sometimes you need to step back and look at what's trying to be achieved. The "process" in itself is not a solution.
I do have some experience with the SE5a. So its not a complete mystery to me on a practical basis.
The SE5a was SO STABILE when it was introduced early pilots re-rigged the plane to make it more aerobatic. They later discovered that the plane provided a much better gun platform
that what they were used to flying and returned the plane to the original rigging.
Essentially the design of the plane is very stabile with 5 degrees incidence and dihedral on the wings and stab. Zero thrust on the engine. So effectively -5 down thrust on the engine.
Because of this, its one of the reasons the plane doesn't respond to ailerons only.
Enjoy the winter all