G'day Mike,

Are you a mode 2 flier? Sometimes it's very difficult to make a 'pure' aileron input without putting in a small elevator input as well, and it's different left and right. It's because of the way your thumb sweeps left and right. The elevator input can give you the cork screw roll that you are seeing.

Might not be the issue but something to think about if you can't find any other issues with your ailerons.

Dave H