RE: Pfalz DIII resources -- Photos, Drawings, Plans, etc.
an easy one is to cut off the front 1-1.5 in. of the spinner.
Drill a hole in the back and epoxy in a bolt with the same thread as an elongated prop nut,
drill a cross hole through the epoxy tip and the bolt in it and use a prop nut bar to tigthen it in.
ars