excellent write up deano..................
i had that issue when i got my dc2r which had buddy club lugs on the stock wheels and never sat right, so i asked my mate at honda and he double checked it for me............hence, i went ahead and bought stock type R wheel nuts from honda...................same as deannos pic in first page.............

its a mata of safety for your own good guys..............

i am know running rota slipstreams with rays extended nuts and are fitting and working fine, like deanno and others have mentioned, either take the wheels with you when buying nuts, or take the nuts with you when buy wheels...........