Force Touch trackpad replacement calibration?

I've not worked on the newer Force Touch trackpads yet. But, from my observations I can't see why you would need to, let me explain...

The older Trackpads have a mechanical action, the bottom edge depresses when you depress the lower part to create the click action. With the newer Force Touch there is no mechanical movement for the click action.

OK so whats this calibration all about? Looking at this older MacBook Pro trackpad we can see the click plate adjustment screw (Tri-Wing or Torx). This allows you to make sure the bottoming of the click plate enables the electrical contacts of the click (left & right).