Dabei fiel mir auf, daß die Streben des Schrimes genau die Größe und Form der benötigten Gabelköpfe hatte. ###>When making the struts and especially the forkheads on them, an lucky incedent in the shape of a broken umbrella helped me. I had had disassembled it, due to enviorment friendly recycling and found the the struts of the umbrella had have the right size and shape for the needed forkheads.