Thx
Thanks guys.
The nose cowls had been polished a few months earlier, during RTS from a 2 yr storage in the desert. Following a D-check & another 4 mo storage, they had stained again significantly. Light surface corrosion, roughness (like 300 grit sandpaper), stained and with run off stains.
All caused by storage outside in definitely-not-desert conditions.
No decent pics.
Irr it turned out to be no big deal, as plane & engines performed nominally during the 1st flight.