I don't like to add lead tape just above the grip or put heat shrinking sleaves I prefer to add fishing weights with cotton (so the weights don't rattle inside the handle) inside the handle so I ALWAYS buy racquets with trap door buttcaps (Dunlops, Babolat Pure Series, some Wilsons)... For example I inserted 26g of lead inside the handles of my M-Fils to make them more head light...