@eb801 - Eric, thanks for the feedback. The entire airframe was first sprayed with gloss varnish, both because of decals and of the weathering oils and stuff.
I never used enamels, in fact I avoid that stuff for decades. The F-8 is painted with Gunze acrylic, the exception being the 04 (MRP lacquer).
Just to complement, I often apply oils directly over Gunze, Tamiya, MRP or AK Real Colors and never had any issue with it.
Hasegawa Stuka is a very nice kit but has a few issues, one of them is the absence of any detail on the rear part of the lower engine radiator. I’m about to try and do it with plastic sheet and other available materials