Unreliable is the suggestion that "You can actually view these form your profile under awards, and then the course section of awards."
b0gey - that information is incorrect for a large number of players. WGT is very aware of a bug in the awards section that was recording wrong information for months. There were multiple threads on these forums and the bug was confirmed multiple times by WGT personnel. I believe the bug is fixed now but they were unable to apply the fix retroactively. The best score for one course actually displays as the best score for multiple courses.
I don't believe that it's possible to make sure that you can find your best score on a course unless your score history still takes you all the way back to your start date with WGT. You would have to look at each score to figure it out. Otherwise Gareth is probably out of luck.