I just got an email back from Yachting SA who have discussed the situation with VHYC. YSA outlined my options and advised I ring the Commodore. After talking to Robert the results are going to be redone and corrected. The club used the old Yvonne yardstick which was reprinted in our current YSA book, VHYC tell me they didn't get the email sent by YSA on 4th Dec 2007 advising the updated yardsticks where available on the website.
Tim, it looks like the results you have calculated will end up being the final result. Thanks for urging me to contact YSA, they are very helpful, and I have learnt good stuff today.
Darryn