My new 'vrroooom' Brother PC-420PRW sewing machine turned out to be a beast!!
There are so many things I really like about the machine - but sadly I had persistent issues with the upper thread tension. I could not even sew a straight line! Had to rethread many times to get the thread tensioned, and then it kept slipping. The result was uneven loops in the upper thread and very loose bobbin thread.
Good news - after 6 projects and valiant efforts, I simply returned it. No cost to me. And I'm back working on my sweet dependable Brother CP6500. Ah.
Hasta luego! Coco