[87Skier]

I'm pretty sure I saw a write-up on here for someone that replaced their 168/194 bulbs with LEDs and wired them up so that they are dimmable.

I think they might have introduced extra load into the circuit so that the LEDs saw less voltage/current as you turn the knob. They also didn't get the dimming set perfectly, so the top 25% did pretty much all the dimming, and the other 75% of turning did nothing.