Hi Steph,
good start, nice cockpit.
I'm surprised that you use vinyl masks which are more difficult than kabuki ones.
I looked at my doc, but I don't have this part of the fuselage for the version that interests you on my plan (Maru Mechanic 43 11/1983), so for the hatch I don't know....I'll look in my books today if I have a beautiful photo that shows this place.
I think you can trust Hasegawa. There is a fairly learned Japanese person on this forum, you could ask him.