As an aside, I think we should make a point of including "F16" in the boat name when signing on.
Which will really confuse people if you're claiming 1.03 for a Stealth R!
But then Geaorge, IF you're sailing an 'R' you're entitled to a different handicap. The R is just a different version from the same builder. Just like any other builder having several models. There's nothing confusing about that.