CMC
I recommend spray-on dry teflon lube for the jacks. It dries to a powder and doesn't attract dust. I just got back from a trip and the jacks work like new. Spray the silicon on the jack-screw as well as the bearings on both ends.
BTW, this stuff works great on any cabinet door that squeeks as well. I get one up on them and spray them all at the same time to prevent the squeeks. You will have to wipe the white overspray off the cabinet after it dries but if you are careful with the little red tube that comes with it, you won't be wiping many off.
I wish I could tell you where I bought it, but auto stores or Home Depot come to mind. Bill had a lot of trouble finding it, so you might call ahead.
I am thinking about spraying it on my WDH. It is supposed to be lubricated where the torsion bars pivot. I am not sure it will take the stress that it sees here, but it sure would be good to not attract dust and grit into those bearings where it is nearly impossible to clean them out.
Bob
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