FAQs & Troubleshooting Popular Innov-is 980D Not your product? 97 Results 91. Why does the upper thread keep breaking? 92. Why is the outline sewing off the pattern? 93. Why does the lower thread keep breaking? 94. Fabrics and stabilizer material for embroidery 95. When thread got tangled. 96. How do I correctly install a bobbin? 97. Incorrect thread tension FAQs & Troubleshooting