GC's numbers are for Standard greens. You have to increase them as the green speed increases.
More important than the numbers you use is the way you use the avatar moves. You can't be lax in those moves-you need to be as exact as possible and do it the same way every time. Don't use the first move you count-cancel it and move it again, several times if you have to, to be sure. Waggling the putter is a good way to describe this.