Originally Posted by tooMuchFabric
Check that your top thread has not slipped down around the spool holder, this can happen and will cause the top thread to act like it is caught on something, making the top tension "tight."
This sounds like the spindle suggestion from the last post, but I dont understand which bit you mean- do you mean just the plastic sticky-out bit where I slide the spool on to sew? There is nothing wrapped around that.
Any more inspiration? Please ?!!!