I'm trying to remove the wood centre panel of an '86 300sl so I can replace a light bulb that lights the ventilation slider knobs. I successfully pulled out the ventilation knobs and removed the three screws which hold the wood to the panel. However I can't figure out how to remove the round fan control switch to enable me to remove the wood panel and enable me to access the bulbs. I've tried pulling and tugging it to the point where any more effort would likely break it, but it doesn't come off. Can someone advise on how the fan/ventilation control switch is removed from the panel?