I have a 3.2mm motor shaft and a 9 inch prop (sorry about mixed measures!) and I have a 4 piece adaptor comprising a nut, washer the split bolt thing and its housing. The Prop is plastic and the hub has a textured side and the other side has "Made in Germany" printed on it in raised lettering. This lettering is a main in the butt because it causes the prop to go on wonky. What is the correct way to mount a prop on a motor?

Currently the assembly is like this...

Motor <-- split bolt <-- bolt housing <-- prop <-- washer <-- nut