hifirko,i put all my tank stickers on with glazing silicone ,smear on to tank with putty knife 1 mm thick then place sticker on and gently smooth out with knife to make flat ,i also punch small holes in decal like mxm sticker which lets them breath ,my 82 rm125 and 250,s have tank stickers that have been on for 4yrs without an edge lifting hope that helps ,don.