The negative differential is to make your rolls axial. Of course you know that. But that doesn't affect the squeal that much.

The 'squeal" is a function of speed and aileron throw. The more speed the plane is carrying through the roll the more pronounced the squeal. Mine is louder on a snap roll.

I was watching your snaps and they don't look anything like mine do. On mine, if you blink,
you missed it, they are so fast. But I need to cut down on my throws a lot for the sequences
and after that the snap rolls should tone down a bit. I'm thinking that the way yours snaps should be ideal for sequences. How much throw are you using? (when you snap)

Thanks,

Stratos.-