Many thanks for your generous and supportive comments, Juan, Rick, Stephen and Jeroen!
This weekend I made my traditional ritual of taking a critical look at the model and decided to rework the fuselage - I am not satisfied with the oil staining (looks different on the photos of the original machine) and with the shade I took. As the first step, I reworked the stitching I was not very happy about either, this one looks more satisfactory.
I also discovered a few flaws on the upper sides of the wings, so here we go again - cutting masks, masking the wings and several layers of surfacer. Demasking will take place next weekend.
Cheers
Ondra