If you still need a spinner, just give them a call direct.
Tru-Turn/ ROMCO Manufacturing 281-479-9600

They will custom cut the spinner, based on the props you intend on using. The have machining co-ordinates for most (if not all) of the popular prop makes/sizes. You wind up with a really clean slot, that will fit your prop choices perfectly. They also offer a light backplate that helps cut some weight off, if you need it.

Tru-Turn Special Slotting Options
http://www.truturn.com/cgi-bin/store...clo&ppinc=slot

I've placed several orders with them. Superior product, and they are really nice people to deal with!

I fly the Sig Extra 300XS with OS 1.60 and the 3" Spinner TT-3002-B.