If it's not a wax it may not be an issue. Try 1 side and see what you get. If it doesn't stick I'll replace it. If it doesn't you might try some TSP on the area.
Some wry humor follows: I sell 40 different kinds of bike decals and I must say the F6B crowd has been the most "challenging!" Maybe that's the demographic... These aren't even close to being the larges square inch decals I offer, so doubly puzzling. BTW - FJR1300s rule!
Deano
Final note - In spite of my messaging settings here to the contrary, I NEVER get email notifications for either PMs OR forum responses, so it may be a couple days before I come back to check on progress