hi happel: are you missing the putts to the right-left or are you too short-long?
I too need to get used to the putting. I had just gotten used to the Tour Pro level putting when all of the sudden I moved to Master, surprisingly, at only 55 points.
The holes are indeed longer and I think the meter could be less forgiving. For putting, as I was never good at, seems more difficult to hit the ding - I wasn't able to hit once on my first round as a Master and only once in the second round.
Other observations:
Cup placement is also much more difficult so you will have to manage risks better and be satisfied with a modest two-putt on many holes.
Along with cup placement the greens are, for a lack of a better term, more "sensitive" in that you have to calculate margins and fractions of distance. It's a f*%&ing video game so it has to be possible to understand the algorithms.
Luckily I haven't been in the rough but the thought of re-learning/calculating the rough on all those courses has made me a little anxious.
Good luck and let us know what you discover!