"Thread throw-ups"... lol that's a new one to me. Is this the same thing as a thread nest? Where is it happening, top or bottom of fabric?
I also have a Brother PQ1500. Here is where my bit of fluff is located. It's the very first spot your thread goes through after it comes off the cone or spool. I usually have it squished down onto the thread; I lifted it up for the photo.
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