bgw, I have a 720 controller.
The trick for the controller is the circle dust protector looking thing with an offset hole in it. Then a channel it can move in easily around, but can't pop out. This makes it guide you to turn it in the way you would think you would want, but can't make it go really out of the way. That and the chain gives it a bit of resistance.
Anyway, it moves around, with a little bit of effort, and then doesn't keep going if you lift your hands much. It definately has a different feel then most.
Good luck on the joystick. I would love to see a good aftermarket joystick that works well with it.