Thanks for the info.

I will be careful when I try to blow out the static ports.

Now I have to try something to prevent the larvea to block them.
The pitot is just a piece of bended tube under the wing, no problem
there.
The ports are two small holes on both sides of the fuselage just behind
the cockpit.
To cover them and attach something to it that makes it clear that they
are covered will become a challenge.

-Kees