I don't see why you cannot fly the Osmose without the canalizer. If you are not used to flying planes with "razor-sharp" rudder responce, I would actually advice you to try without.
Using the canalizer, you hardly have to apply any rudder at all in knife-edge flight, but this also results in a very sensitive rudder during normal flight...

Normally, I fly the ZN Oxalys. Originally, It had a canalizer mounted but I chose not to use it.. I tend to push wrong rudder on too many occations, and using the canalizer would make it way worse than it already is!

Try without the canalizer and post the result here