Question about the Shirley Stitcher. I have read all over and it always says that it goes on the Tin Lizzie 18LS. I am not looking at the LS as it is $2k more. I only read one place where it said the Shirley Stitcher would go on a Tin Lizzie 18 with a ribbon cable. I know what a ribbon cable is (I used to work on PCs), but I haven't found anything written about it being on the 18.