Scott,
The spinner I had with my Warp fit fine so I used it . The prop cutouts are square and don't fit the prop planform perfectly but that's OK. Maybe later I will get the proper spinner.
I can't remember the prop model number. The info is in my prop log at my hanger (not there now)
I sure love it though ! Very quiet, smooth, and even easy on your hands during "burping".
Dick
model 4
912UL