Brad, i would have to say your race order is a very good starting point.
the only thing then is to colate the entries and avoid the combining of any class's which will throw a spanner in the works.
on a side note, i do not agree with the changes made to the GCR's for this event, especially the numbers to consitute a class, it devalues the titles and the holders of previous titles for that class, tooooo easy if you ask me, what happens next year, will we see titles awarded for just showing up. MA has devalued those titles by allowing this to happen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WHAT CLUB CONSULTATION TOOK PLACE?
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As for the pre 75 class's,
good luck for the event, but what a precident you have put in place
Cheers Trev