If your area rep is on an F18 and the gripe is the difference in the numbers between F18's and N20's, do you think it would allways be effective to let them know? Not complaining about our rep, but wtf? The F18 sail plan has evolved quite a bit while the N20 is gathering dust for the past 7 years and the numbers don't seem to reflect this.
I think you'll find none of the evolution of F18 sails would result in a change to the SCHRS rating, as I believe its already based upone the extremes of the box rule. So you more likely to get an adjustment under PY than under a measurement system.