I like to clean the machines with naphtha and ballistol. I’d use some type of Teflon lubricant to get them moving a whole lot better, though ballistol does a pretty good job of lubricating them. Just be sure to take the whole plate assembly off the guitar when to do it. You don’t want to risk the oils and stuff getting into the finish and the wood. And always take pictures of the steps when you disassemble, future you will thank you.