Hi Scott,
When I used YS I liked to set the right thrust so that the model came out of a radius, from horizontal s&l to vertical, in the vertical yaw wise.
Was always around 3 degrees maybe a little more back when the motors were smaller/less powerful.
With it set like that I'm sure the 'balloon was squeezed' some giving some side effects.
Of course the P schedules were mostly performed from upright and were simpler then also.
However when I went electric I found such a set up to have too many and too severe side effects so backed off some right thrust and used mixes to help.
I found the whole thing very very frustrating, as the balloon was squeezed either one way or the other.
I'm not sure why the difference, more prop and or more pitch on the E setup !!?? More gyroscopes on the YS (they oppose P effect) !!?? I gave up !!!!
So as soon as Brenner pop'd up here I made contact - went Contra and haven't looked back.

Brian