And there's countless uses for a heatgun not just paint removal. Bottom line is, if you heat the sticker the glue softens,the sticker becomes pliable and eases pulloff, then you wipe clean with a solvent. Then horror stories you hear of thinner eating through paint are a result of moronic people leaving the chemical on the surface where it "eats". A mere wipe on,wipe off won't hurt anything, just used common sense.
Your riding a busa, and that takes some common sense to ride, so use it when doing your stickers. Rant over.