spinners
Yes...
You can carve the openings in any spinner to fit your prop. I do this all the time. Just make sure you get enough clearance from the blades so you can easilly slide 1/32 balsa between the spinner edges and the prop.
Tru Turn will cut their aluminum spinner openings to fit your prop if you tell them what prop you are going to use (they'll cut the spinner for whatever number of blades too) This option is a bit more expensive...