Thank you Stephen, as a matter of fact I had already remade the struts from scratch and my second option was your first one!
:-)
To me this is still the most dreadful moment in building a biplane, no fear for rigging but a lot of thinking for placing the struts and the top wing.
Maybe because as I build in 48th I have on the average low quality kits and there are often precision problems.
Thanks again everybody and good night
Antonio