@stephen-w-towle, thanks for this information, Stephen. The decal set used is KitsWorld KW172019 and seems to be specifically for Sally B, even stating the aircraft at Duxford. Mine is indeed an early G-model so that explains the gunner windows, I could have figured out at the beginning but was too enthusiastic building this model I guess. Besides that, I'm pretty happy with the looks of the decals so far.

1 attached image. Click to enlarge.

Made a start on the weathering.
To compare, I gave the starboard wing a lightly weathering while the portside wing received a more severe weathering.
I do know Sally B is kept in good condition, but personally I tend to go for the more severe weathering, wondering what you all think about it.

@stephen-w-towle, thanks for your motivating feedback, Stephen

I would go for the more weathered look as well, my friend @johnb!

@fiveten, thanks for the feedback, Spiros. The more severe weathering it will be than.

Looks amazing and coming really close to the finish line, my friend @johnb!

@fiveten, thanks a lot, Spiros. I should be able to finish the Fortress this week. Need some bench space for the Mustang 🙂

@gblair, thank you, George. I did show my dad, who also saw the aircraft in real, the progress so far, and even with a picture of the actual aircraft next to it, he did not notice the difference, so currently I except the result as is.

@airbum, thanks a lot, Erik. So do I, although I'm still in worries if the nose will look correct.