George,
Get a 12MM prop reamer (or drill bit) and open up the spinner backplate then slap that baby on!
Your job will then be done. You will need to open up the back of the prop to 12MM too so it fits.
Lastly, I believe are about to discover why the masses all say..."if you want to be able to use the words reliability and power in the same sentence with turboprop in our R/C community...you need to be flying a Jetcat". Congrats on your new motor!
Boli
Last edited by bevar; 04-20-2014 at 01:36 PM.