I put 15g weights in my 35 in. Scotty's GoLo 6. It has helped me with tempo and head stabilization. My normal course has fast greens. But since on slow greens a lighter putter help, I'm considering buying the same putter because I love it and have one with 10g, and one with 15g. (rather than change them back and forth if I play on slow greens somewhere) Anyone else ever do this?