Well, I figured it out, your post made me take a much closer look at my SimObects\airplanes folder tree.

They are indeed there, they were inserted right below a long list of very similar (almost identical) looking folders with the same lettering, ie. CLS_XXX etc., and I just missed them in my haste, and assuming they'd be named Captain Sim or something like that...

Anyway, thanks for getting me to slow down and really scrutinize the SimOjects\airplanes folder tree.. 8-)