I can see, kristorf, that I need some rules myself!
I had looked, though, at a dozen or so models and profiles before beginning, although most did not show the undercarriage. And I was muddled in my understanding of the
one that did. When it was stated there that the underside of fighters in 74 Squadron changed to Sky during the Battle of Britain, I didn't appreciate that it applied only to the starboard wing.
I see that the roundel on your port wing is the same as on the fuselage and not the Type A used in the CoD template. Did the yellow band provide better contrast against the darker background? And isn't it curious that only the wing is painted in CoD and not the length of the undercarriage.
In the future, I'll leave the RAF in your more capable hands and return to the painted ladies of the Luftwaffe!
(Your image host, by the way, still is postimage.org, which you were kind enough to recommend earlier. Do you find that the site does, in fact, support 2048 x 2048 uploads? My one experience was that it did not. I ask because, if changes are to be made, it would be better if only I were inconvenienced in having to make them.)
The revised Spit can be found
here or
here.