Thank you Andreas, Ken, Guy, Prze, Stephen, Mike. Ferry and Lance! Your comments are highly appreciated!
I don't expect to see another one of these!
What about this one on your bench? Looks very common to your recently built 504:
https://www.iwm.org.uk/collections/item/object/205314509The build detail and especially the rigging are top notch,
Mike, the bird (and the distance between the wings) is so small that I could not use the usual turnbuckles or RAF wire terminals. Rigging felt like I was building a 1/72 model

It's sometimes a real challenge to align two wings properly but you managed to align 4 wings.
Here I take the advantage of my build method. It was possible to bend the brass pins of the struts with brute force on the wings.

my sincere compliments on your enviable skills!
Lance, I am very glad that these skills now include resin models. This will definitely not be the only model made of this material.
Sorry for my late answer, as I was some days not at home (so also no progress on my projects).
Cheers,
Frank