I wanted to thank you for the video. I have a 1901 Singer 27, a 1910 Singer 127 and a 1921 Singer 66-1 that all had this problem. After watching the video last night, I jumped in this afternoon and within 2 hours I now have all 3 machines working properly. On the 27 and 66 I had to use your little trick with the needlebar but, it worked perfectly. Thanks so much!!!!