Thank you for this link; I've sent it to my cousins--they are fairly new to sewing and all have machines & I've tried to tell them that they have to read their book and learn to clean their machines. Apparently this didn't seem important, so they clean off the top, but call me whenever it stops working, and it's always a cleaning issue. I've shown them repeatedly, but now I printed this & gave it to them all! Thanks so much for the help--I really, really needed it!