piztaker:
Well I shot a -8 on Bethpage and my average went down. Then shot a -10 on St.A's and it didn't. Honest.
That is exactly what would happen if your average is nearing - as in your case - moving up to the next tier.
Using your tier (TM) as the example:
Your average is now based on your best 50 rounds. This could be made up of:
10 @ 60
10 @ 61
30 @ 62.
Average = 3070 (strokes) / 50 = 61.4
Hitting a score of 62 will not now affect your average, hit a score of 61 and one of the 62's will drop from your top 50 scores and be replaced by the 61 leaving you now with a top 50 score list of :
10 @ 60
11 @ 61
29 @ 62.
Average = 3069 (strokes) / 50 = 61.38
A TM with the above stats now requires to shoot a minimum of 30 over 9 holes or 61 over 18 for their average to drop.
It doesn't matter what course you score on, it's purely the number of strokes taken per round.
Hope that helps.