I use three flight modes for my IMAC flying. One is for most all flying as described above, another is for hammers and rollers where the rudder has more throw and the airlerons are slowed down so the plane doesn't start rolling to fast in the roller (we have "one roll" rollers all the time.) The third is for spins where the elevator has some more throw to get a good stall break. In reading your throws for your IMAC style flying, may I suggest less rudder throw for snaps. You should only be using 10-15 degrees of rudder. Any more and the snap wants to over rotate all by itself after letting off the sticks. A lot less rudder throw, and the snap will stop when YOU tell it too.