i have just had 3 consecutive birdie putts do the same thing. right over the centr of the cup, but ball only went .6 or so. also have had putts go straight at the hole, plenty of speed and all of a sudden, just as it's about to fall, turns right or left and stops less than a foot. or 17 in. uphill, 22 ft. hit it at 25 ft and ball goes over 30 ft???? how that can be i'll never know