If you find the grease things, fill them with vaseline. I think they are usually called "grease pots", but I'm not sure what the actual name is. They are kind under and behind the balance/hand wheel. There are 2 if them. They face down toward the bed and are kind of hard to get to. They just unscrew. Since they face down, you need some kind of tool to put the vaseline in them. I use an old hypodermic needle without the needle. (it's still messy.)
bkay