Here are some more details:

The anhedral ventral T canalizer is in the same angle as the top canalizer: -1.0 degrees (the wind in +0.8 degrees), so it have the same affect as you add a big canalizer to a plane that does not have any canalizer, but in this case it almost double the affect, the rolling segments became much straighter, I just couldn't believe that this is my plane!!!

As for the air-bake, the angel is about 50 degrees so the airflow after the air-bake goes under the tail so it does not affect the elevators or the rudder.

The air-brake required quite a few elevator down mix but it didn't have any pitch nor rolling motion.
The plane dived straight down very slowly in a constant speed!!!

When you apply the air-brake in horizontal flight you don't have any pitch or rolling movements.

Best regards,

Isaac Najary