HUH?? Left? That was the Zero's strong suit. What the testing of the Akutan Zero revealed was a greater difficulty turning right rather than left at high speed. Remember Sakai Saburo escaping clouds of Hellcats with repeated hard aileron rolls to the left in his aging Zero?Against A6Ms specifically they would also continue to roll left in the dive because the torque of the Zero prevented them from rolling much at high speed.
Cheers,
Wes