Looking for opinions. I have a model 2 with model 4 wings, flaperons, and mixer. The 4 should have 25 degrees up whereas I have 21-22 degrees. My understanding is that the 4 has 30-50% higher roll rate than the 1-3 and the speed wing (that I have) is even more. My DAR isn't happy about the 20 degrees but I maintain that the lower roll rate isn't an issue and that it will make the plane easier to fly - not as twitchy. Thoughts?