Hi Muv,
What I meant to ask was "Why does my stop motion screw become loose of its own accord?" I think the problem has been solved by ensuring it was properly clean and oiled. It seems to function ok now. The machine sews ok, the stitch length adjuster works fine. My only remaining problem is that my bobbin winder tyre was perished and had become too slack to function. I hope to get a new one at the weekend. I just need to find something to make now! I saw your tutorial for the Diamond Jubilee item showing how you used paper to do the "1952" .Am I correct in assuming that the edging (blanket stitch??) of the numbers you did in gold thread just attached to the purple numbers themselves to prevent fraying, and did not go into the cream backing? Apologies if this is a silly question. Some very neat work.
Stitch