I also have a Tin Lizzie and use King Tut for the upper and Bottom Line for the bobbin. I ordered mine from kenquilt.com also dba machine quilting connection. They are near Wichita, Kansas. In July, I paid $17.95 for the large King Tut and $10.00 for the large Bottom Line. They shipped it right away. I've ordered more than once and have been pleased. Superior threads included a brochure with the Lizzie showing their threads and colors.