Correct spinner?
 

What size aluminum spinner will accomodate a MA 13X6 prop without having to trim the slots?

Correct spinner?
 

I think a Dave Brown 2 1/2" will (I can't remember what I have). It's either that or the 2 3/4".

Correct spinner?
 

Lowlander69,

Spinners are made to accept the smallest prop that the MFGer thinks someone will use with it. That way if for some reason you need a large spinner with a small prop, you won't have your little prop coming out of a gigantic hole. The bottom line is: Choose the spinner that is the correct size for your model, and be prepared to enlarge the holes if need be.