Tell us about yourself!
I don't know if you ever got it figured out, but there is a trip pot on the driver that you have to adjust to get it to start. I don't know the correct method do tune it, but I just played with mine until it started to run well.
I have remade the files in solidworks for you to remove precision errors by sketchup. I didn't include the logo, but Im sure with some added time, I could. Not really a functional part anyways. contact for the file
I wouldn't count on it. Your better off just getting a few load sensors from alibaba or ebay for a few bucks. These aren't very accurite.