When adding lead tape say I got the Babolat Lead tape where 1 inch= 1 gram. If i wanted to put 3 grams then would I put 3 stripes over each other? Also is there a minimum to how much I would need to put at 2 and 10 O'clock for the sweet spot to be moved up like? I mean would 1 gram make a difference or does it need to be more like 5 grams? Thanks.