Hallo!
here some new steps...
I want to replace the plastic struts keeping the floatres bound to the fuselage belly... they are so thin and weak... so I decided to use a brass rod 1 mm diameter.
The struts have an elliptical section 1 mm x 0.75 mm so I don't know yet how to shape the brass rod correctly...
BTW here is the work done today

The brass rod was cut to measure with tongs
The brass chunks are 6 mm longer than needed, to have some extra length to turn the pins...

I marked the precise measurement of the struts (lunghezza del montante = strut length)...

I locked the chunk into my drill's clamp...

I mounted the drill on its stand and use a file to turn the brass area outside the black marks...

Here are the finished pieces

...and the check on the plans
now I must enlarge the 4 holes in the fuselage belly to allow the pins to fit in.
There is still a doubt: the round section of the brass rod... in your opinion can stay round?
Ciao
Antonio