The spinner installation is a small project by itself. First the cutouts for the propeller blades are made. There is a template on the [b]Sensenich[b] webiste(Thanks Hervé).
I first make a conservative cut and go on from there by small itérations.



Before finishing all the drilling, the little contraption helps verifying that the spinner is turning true. Then all the remaining holes are drilled. The cutouts then get fine tuned.



The spinne installed but quite some work left : installing the nutplates, drilling to the correct diameter, finishing the forward plate installation.