You have a great looking conversion there. It looks like we have sister machines- except yours is much better looking. Also, I have the manual speed changer. Could you please help me out with some questions on the air brake? When I supply air pressure to my machine the brake activates and stays on no matter what I do. I traced the wires to the solenoid valve into the main transformer cabinet. They attach to the terminal strip in the bottom of the cabinet. I can't trace them any further.
Also, you have a switch box on the left side of your machine's spindle. What is that one for?
Here's a picture of my head when I first got it- yes, it's very dirty.