I would try taking a package from a spinner, cutting the clear plastic form out to where it will lay on a flat surface, then cut down from the back of the package towards the point to where it will act as a shield to the servo and then simply glue/fasten it to the side of the plane in front of each servo, I have never tried it but it's an idea that just flashed through my head when I read this thread. Seems like it would work though...

-Kelly