Tug - I thought the same thing when I ordered the nozzle sets but they came with Robbe 60 mm regular props. In fact, I had to order a second left handed prop as the original pair were both right handed. They are not flat edged however, and that disapointed me. I can see how that would make quite a difference so maybe I'll scout out a set in the future. Right now, I think my bigger problem will be too much power as these Pittmans are brutal...
I'm also synchronizing a smoke unit through two stacks although I guess I'll have to explain why the "diesels" smoke white and not black
Keith.