I got brave and took the bottom off the FW tonight. Got the red felt circle and screw off ok. Took off the metal plate thing. Whole underneath of it very greasy, all dark grease. Then there is this curved metal piece on the bottom, and it's coated with the same whitish gritty stuff. There is a long metal bar and on the end it turns on like a toothed cog thing, that is covered in balled up oil that looks like a dark grease too. I'm going to go peruse the owner's manual some more. I can't figure out how to get at all the metal pieces under the spool pin. There has to be a way at it. I suppose that is probably where people would use a toothbrush or artists brush. Had a great time looking over those videos. Playing around on the board looking through the tutes too.