Roly, the He 219 is still a good kit and goes together well. I have built it in 2021 and can’t remember any bigger problems with it, though I just built it oob and used only the aftermarket antennas from Schatton Modellbau on it. So I can’t tell you anything about the Aires Cockpit.
Don’t know if you have followed my build blog back then. Maybe it helps a bit. Starts from Post 43:
