I used clear packaging tape to cover two of the three hinge gaps on the lower side of my ailerons. I didn't cove the hinges behind the spades. Wow, what a difference in roll characteristics. Since my test flight was done 15 minutes from a legit practice area, I couldn't do full rolls but what I could do really amazed me.
Prior to this change, I found my ailerons to be non-linear. There is no centering, thus, no break-out force (or very little) and as the stick goes to about 2/3 travel, the stick force seems to get lighter. I wouldn't say the ailerons are "snatchy" but the feel close to that.
Now, with the gap seals on, they get "snatchy-like" earlier and they seem much more effective.
Since I'm not an engineer type, you'll have to forgive the layman's terms but I'm hoping someone will have had a similar experience and be able to provide some input as to whether this is normal or not.