Hate to say it... but
I am sick of this conversation. Let the number be. Why should we be the only class that is altruistic enough to always bring it up. I don't see anyone else running around trying to change their number.
The system will change the number with time, and as Matt said, the system doesn't work very well anyway. Look at the 18HT... the number is as fast (used to be .3 difference) with a N20. That might have been the case a long time ago but it isn't anymore... and although the number is coming up it will probably be 10 years before it is something "fair."

nothing against you jackmac... but I see some sailors bragging about winning all the time based on corrected times due to a BS high DPN and I have never seen them (him) say anything about changing their (his) number.