Loops and birds nests on backing of Avante
Hello! I could really use some help. For 3 days I've been trying to use a pantograph. I'm able to sew and everything sews beautiful for a while but then the thread starts making random loops and progresses into birds nests. The thread is not coming out of the tension disc or spring. We started using a net and my MIL who I share the machine with came over to watch the top thread as I sewed and could find nothing getting stuck while sewing. This is something that happens after I've been sewing for a bit and not in the beginning. Any ideas of what would make the upper tension change while sewing before the dealer comes out? I'm using Omni on top and Sofine in the bobbin. Thank you!