I have used balsarite for tacking down any film type covering that is starting to peel off the plane due to fuel soaking, improper film application at factory, or in repairing crash damage. I am currently trying in an old oil soaked model that I have removed as much oil as possible from by boiling, talcum immersion, "goof-off" application, and repeated applications/removal of lightweight spackle. I have heard that balsarite will hold down film even if the surface is a little oily.