I agree with slowing down. Hard to do sometimes as you want to get back to sewing. It puts extra stretch in the bobbin thread which can cause stitching problem.
Another suggestion would be to thread from the top spool pin, rather than the bed spool pin. This can be seen at
https://www.youtube.com/watch?v=Wgs4zRY-a-4
Something else that might be considered is the way the thread is wound on the spool.
Janey - Neat people never make the exciting discoveries I do.
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