Hi,
Your ranking, I think - is based on the average of your last 10 scores. So .......... As you add a round to your overall number of rounds played, then the 10th round score is dropped off and the ranking recalculated. If your latest round is better than your 10th round then the average will fall.
It is very possible that maybe your rounds 9 & 10 scores were poorer than the two recent 38's you shot on Bethpage.
If thats the case, rounds 9 & 10 are dropped off and essentially replaced by the two 38's - and so your ranking falls.
Sorry havent explained it very well - check out the forum posts its all in there.
Cheers
Doug