Embroidery leaves loops on topside of fabric. I have loosened the upper thread tension to 0 and does better however, I have used double stabilizer, same type thread in bobbin, slowed down motor. I recently wound thread in wheel and around gears. I cleaned it all out however, I feel that I may have fouled something up with the stitching at that time. Top thread seems to get caught in loop and breaks. Maybe the hook or timing. Your thoughts and ballpark figure of cost to get fixed. my machine is a Bernina Artista 200. I did not see this in the product box.
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