I love deoxit. I use D5 for switches and connections and F5 for pots and faders. My guitar tech used to use servisol in pots and faders.....they went proper scratchy after a while. I found that F5 restored them a little after this. The lube in it I guess.... I do find with pots with nice physical resistance (lots of grease in them??) F5 does make them spin a bit too easily. That might be good for some people I guess but I used it on a few things (mixers, controllers etc) and was a bit disappointed :-( Anywho, got my alcohol, compressed air and D5 ready for the Variax. Let's see what happens.