hi guys.
Thanks for the feedback, it's very appreciated.
Regarding the air filters, I thought the cupola was introduced in july'43 and the filters were discontinued in october,43 so I decided to keep them. Besides I kinda like the looks of them,(which is why I kept the smoke dischargers which definately should not be there!).
I'm going to try and get some more life-like pictures so I will post them when done.
cheers
Frank