Okay, so maybe I'll wait on the new radio for a little while.
And thanks for the name options for that part. I think I'll be safe calling it either a spinner nut or adapter. I guess I'll find out when I go to the LHS tomorrow night.
On a different note: I want to get that starburst pattern on the wing so I when I finish up all the electronics and control rod installation she'll actually be done. Maybe I'll be able to get going on the last pattern tomorrow afternoon. I hope so.