Fascinating. I would not have thought the attraction would be so strong over what would typically be the ~6-inch distance or so, between cartridge and dust cover. So ES on an LP can spuriously increase VTF and ES on the dust cover can lower it. If you're lucky, the two attractions are equal and there is no change in VTF. So one other solution is to rub up your LPs with a wool cloth before play with the cover down.
... that is a new one to me (dust cover reduces VTF by electrostatic attraction). How did you figure that out ... by raising and lowering the cover with the scale in place that you could read through the transparent cover.
That's exactly what I did and with a digital scale it's easy to get a precise reading.
"Bottom line: If you don't notice much of a difference, then down all the way. But just having the lid so at the minimum you can close it when you're not using it will help a lot."
Fuzz, I don’t get the last clause of your quote. Leaving the cover up and hinged to the rear edge of the plinth would seem to be the worst possible choice. Fora couple of hypothetical reasons.
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