Bo and Lance,
Thanks, both. Bo, I've answered your response on your Albatros thread. Come to think of it I probably should not have even mentioned "the question" there: this is where it should have been posted, so I do apologize to you on that score.
Lance. your solution is very close to my "Plan 'B'" option. I'd use very thin dental lead sheets, burnish them around the "male molds" on the fuselage and then cut them out and attach. Years ago I did this to get a vent on the under-wing of a 1/24th scale Airfix Spitfire I. I had a Trumpeter Spitfire V in the cache at the time, so I burnished a lead sheet over its vent, cut it out, then fitted it to the Airfix offering. Voila! A new vent for the Mark I. Here's the result, just to the left of the roundel red circle:

Count on it: one way or t'other, the Albi gets its proper louvres.
Thanks, Both!
