Hi guys, its me again with another question. I on occasion have had to change needles out for metallic thread and needle size. All 3 times when I tried to put them back they wont work, therefore I am down to 13 working needles. I have read instructions, used different needles, but still not working. Is there a trick to this, that I am missing? They look fine, but won't sew the first stitch. Thanks a bunch. Vicki