I think I remember you saying that it was easier for you to make a "production run" of, say, 6 units, is that correct? If so, why not make a few runs and then ship them as people order them, rather than wait for orders before making a batch?
Also was wondering how hard it would be to "modify" your design? It's just that the base unit (the one that screws on the joystick base) seems to scrape the top silver surface of the base, eventually making a mark. Shaving off (or rounding off) the bottom edge of the base unit would avoid this "problem."