I've certainly done low throttle landing mixes so assume the opposite is possible.

KE couples are outside the box of a single declaration.

Center of drag, center of balance, symmetry of lifting body, turbulence variations, lateral balance center and the list goes on.

What we know is that some planes aren't troubled and some are. Effort can sometimes pin down the cause for a specific model.

I'm still of the school of thought that my goal is to obtain either pitch or roll stability in KE... I can manage one with the stick without a problem... but I know my skills won't manage both.