I have heard a lot about silicone in the handle. what silicone do you use and how do you do it? the reason I am asking is I am thinking about getting a LM rad for $69.00 putting silicone in the handle and Cap grommets on it to bring it somewhere around 12 oz and hopefully a bit more headlight. will his work? how much weight would the silicone add? how much weight will the cap grommets add? what would be the estimated specs on this racquet?