Do you guys think it's worth it? I am eyeing a great deal on a new Prestige , but the grip size is 2 sizes too small. On my other prestiges I've got a heat shrink in the 4 1/2 (increasing it to 4 5/8), and my other prestige is a proper 4 5/8. Just wondering if it's worth it as all my Prestiges would have different balances. I can notice VERY slightly the diff between the natural 4 5/8 and the heat shrinked 4 1/2 now 4 5/8. Anybody out there done 2 grip size change?