Tigerholesout: but does anyone else have issues with occasional putts not following the initial line
Yes and it's very easy to cause. The mistake a lot of players make is looking at the entire line from start to finish and aiming that way. What gets missed is the crucial start of the putt. The line is no good if it starts off wrong and if you don't pay attention to that first 3 feet or so this will happen.
WGTIcon has mentioned it before-he looks at the start of the putt and the end of the putt and aims accordingly and I learned it first person in a game with AHudd. It helped me quite a bit.