Most modern HOTAS use hall effect sensors these days. At least for the main axes. These are not prone to jitters as pots are. Even so some manufacturers will slip in pots on some of the "accessory" axes. A little jitter around the center can be dealt with through dead zones. Sometimes, like with sliders, you may want to use them in various positions throughout their range. A little jitter may still not be a problem. If it is then there is a filter you can use with Joystick Gremlin that creates a moving dead zone in whatever size around the stopping point you want. I use it for the zoom axis in games that support that. It doesn't just create a stepped range. You might stop right on the edge of one of the steps and a little jitter would cross that boundary. Very noticeable if your view is zooming in and out even a little. Instead it creates a deadzone (of 3 in my preference) around wherever you stop the axis.
