Is it always beneficial to add the same amount of lead to the handle like you did to the frame? Why? I added some lead to the frame, and that didn't affect the balance that much. Also, if I do add lead at the handle, where is a good place to add it? My racket has foam in the buttcap. Even if it does have space, I find it hard to keep the lead from rattling inside. Am I suppose to put it beneath the grip?