It has been several years since I fooled with this situation but I don't remember noticing the lube you are seeing. I remember gently placing the graphite with a small flat head screwdriver on the friction points. Not being a lubrication guru (but I know one....), my scientific wild *** guess (SWAG), would be to remove the excess lube so the graphite can get to where it needs to go. Does not seem that graphite in a thin layer of lube would hurt anything? It will be interesting to hear other opinions.
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