Well, unfortunately I made a mistake: looking at the photos, I've constated that the Belgian fin was misplaced: too high, that explains why the red color was on the rudder.
Luckily enough I own a second decal sheet from Syhart, so I have removed the misplaced fins that will be replaced by the ones of the new decal sheet.
Unfortunately, Syhart decals are from excellent quality and to remove the fins was not easy at all; the paint under the decals was removed!
So I have to re-paint the rear of that aircraft...
It's not a catastrophic event; just loss of time for that build that is irremediably too long... My fault of course.
