Thank you mates!
Well, have had good time airbrushing the primer. Before that I did not forget to sand the cowler...

The primer revealed little jointure visible after the antenna, and a "sprue-attach location" on an aileron that was imperfectly sanded. I corrected with cyano for the jointure; sanding; and new airbrushing.
In the process I broke the filter under the fuselage

but reparation took me less than one minute
