Organizers statement here -
https://www.northwest200.org/statement-f...est-200-3/

Such a shame, when, just a few weeks ago, the event wasn't even going to happen.
Can't believe this wasn't sorted beforehand, 
FHO reading & questioning the regs,
scrutineers pointing out the legality (or otherwise!) of carbon wheels at the time of scrutineering,
daftness of a rule that seems to say "those wheels won't do, but if you change them that won't do either"!!
Not good at all.