Are there any Van Dorn HT Series experts out there that could give me a brief, or lengthy, explanation of the tuning functions on one of these machines. I think a lot of my problems could be solved if these things were just tuned properly. Alas there is nobody here anymore that knows how to do it. I would be more than happy to learn, especially if it made my life easier.

What exactly is it that I am tuning anyway? An hydraulic valve or something that controls the valve? What is Gain, Rate, and Reset and how does that affect my machine's performance? How do I properly set these parameters so that the machine actually does what I am asking it to do instead of bouncing around like crazy trying to do what I ask it to do when it simply cannot do it based on these settings being screwed with one too many times? I know these are very popular and widely used machines so surely someone out there can give me some advice or instruction.

I would so very much appreciate anyone's help in this area.
Thank you.
James