As someone who tried this all ready, I REALLY hope this guy can make them, but everyone I talked to said the same thing until they actually saw the gear. The problem lies in that it is a complex gear with multiple pitches and a mix of straight and worm gears.
I'd be willing to supply the test gear if I can get the free one or even just pay shipping for it. I even have the gear all ready pulled out. I do have to have my gear returned though (it took me a couple months to get it back from the last guy).
Drop me a PM if interested.
Rick