I am trying to figure out what accessory I am missing to set up the rotary wheel on the Sherline mill I recently acquired. I have it set up vertically (in photo), but I want to set it up horizontally for gear cutting. I looked on Sherline’s website and see no adapter which is designed for this. I got all of this equipment with no instructions and the gentleman I got it from does not remember anything about any of his equipment. I have jewelers lathes, but, am totally green on Sherline equipment. Any suggestions or photos appreciated.