Pilot Chad:

If you look close into your ailerons you will see that there is a little space between the aileron and the wing (where the hinges are).

You can get some clear monokote or heavy duty clear packing tape and "seal" that gap.

The way to do it is to flex (with your hand) the control surface to its max throw and apply the tape.

Take a look here http://www.rcuniverse.com/forum/m_31...tm.htm#3159454

Cheers,
Joseph