Toss the stuff!
I put it under the wing skin. After 780+ hours it has turned yellow, become brittle and is starting to look like rhinocerous skin! I tried getting it off with laquer thinner, MEK and anything else I could find in the shop. The tape is off but the adheasive remains. It won't come off! It just sits there and looks ugly! Sure glad I didn't put it on the flaps. If I did it over I would put some of that adheasive backed felt on the underside of the wing skin.