The one thing I really don’t like about the u.RAT is how slow it is to turn the roller inductor. I also noticed that you start wearing down the wire on the roller.
One answer would be to use a relay board. You could switch in taps of a fixed inductor, and use the switches on the KPOD to control which tap you want.
In fact, you could do the same thing with doorknob caps, but the variable capacitor that I have tunes nicely with a stepper motor, and with no wear or tear on the component as there is with the roller inductor.