It is worth the trouble to pull the switch apart and clean it up properly. Even though they look very intimidating when you pull them apart, they really aren't difficult. I had mine apart right after I got my LWB a few weeks ago, because the green button (that stores the memory settings) wasn't working.
To what has been mentioned above I will add that tweezers were a HUGE help when reassembling. Bear in mind that all the pieces are just perched on top of one another, so *something* is likely going to astray during the process of removing the cover. In troubleshooting my problem with the green button, I had the covers off three times, and at least a couple ball bearings fell off their upper perch each time.
As far as grease is concerned, it can be very helpful for reassembly, but be careful to not use too much, or you'll attract dirt. I found that I only needed to put a tiny bit on the bearings that sit on top of the springs. They're the only parts that don't have another part sitting on top (at least until you put the cover back on).
The picture on OkieRover's website is a great reference - the switch "stalks" on the bottom left and right will fit in ways other than that shown in the picture, but you'll find that the switches won't move (ask me how I know this!).
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- Ian
1993 Range Rover County LWB / 1996 Rover Mini SPi / 1965 MG 1100
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