Mount the Reisenauer offset clamp middle part and the propeller correctly.

The end of the thread is cut narrower to allow the prop screws to be screwed in securely. For this reason, the prop screws are a little more difficult to screw in the last two turns.
Additional securing with Loctite is not necessary.
Correctly mounted, the guide struts for the prop gum point towards the fuselage.
The propellers are close to the fuselage:

In the following the Reisenauer offset clamp middle part was mounted in the wrong direction, so it is also not possible to attach the offset clamp middle part to the spinner:

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