This is what I get... I'm using buttons for rudders (0 or 100%) at the moment, but it shouldn't have any adverse effects on the idea.
1) First 2 rolls are with elevator, rudder and ailerons into the roll direction = No problem here.
2) Next 2 'rolls' are with crossing the controls = there's a problem here.
3) Last 2 'rolls are with only rudder and elevator (the snap roll) = No go to the right, I was lucky to get it to vaguely roll to the left, but no snap ?
Unless I'm very stupid (shhhh!!

) this is not right. Even the stable Tomahawk flipped over when the controls were 'forced'.
Ignore the prang into the building - I forgot which button the brakes were on