Per the subject, does anyone have any recommendations? Rubbing SuperLube grease on the exterior doesn't do much. Is there maybe a way to slide the pieces off and get to the metal rail? Unless SuperLube oil is an alternative, that may seep in there.
Is it stiff? What you need to do is apply heat to it with either a heat gun or lighter to burn off the old oil then add new oil.
I used 3-in-1 oil but any other machine oil should work.
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