Heather, I tried to do a comment to your post, but it went out into the ethernet somewhere, so I'll post one of my own.
I had a lot of trouble when quilting with poly thread (I use a Brother PQ1500, which is a high speed machine). Turns out that when the tension plates get hot from the thread moving through at a high rate of speed, the poly thread starts to melt and weakens to the point where it breaks when going through the needle. I usually use 100% cotton now unless there is a specific thread that I need to use for an effect.
When I took a MQ class from Harriet Hargrave a few years ago, she recommended a Schmetz 75/11 Stretch needle for those threads. Not sure why, but that needle really does seem to work.
Kathi
Kathi....thanks for that idea ...I have some of those needles and will give it another shot ....
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