Yes you are absolutely correct! That's the biggest flaw in this system IMO. And I don't think it's fixable without a fundamental redesign. The pressure is controlled by a rubberband. I could possibly use the servo to relieve pressure during certain strokes, but how much? I don't know how tall the paper is! It could be a ten sheet packet or an envelope. And to simulate pressure differences we're talking about fractions of a millimeter there. I can't crack it!
