done a favour today for a chap, a small upvc square frame partitian fell of his window, the small bit that makes widows into small square design, i said i would stick it back on for him, he put some super glue on it as i tried to stick it on it slipped onto window ledge glue dropping on to ledge, my response to wipe it off, horror my cloth made it all dirty with the glue not coming off, its all dry now but has left a dirty mark on bedroom frame , does anyone know of a good aplicator for upvc to roughly restore its whiteness again, would T CUT white if used on the sill get it white again, or is there a spray or something to spray on to bring back to white.