I had the same issue at the beginning with certain fabrics while making masks, the needle was too thick and pushing the fabric down, when I doubled the fabric it was a bit better. Although I was using 100% cotton, all fabric and prints feel different. Some masks I had to triple or quadruple it if I didn’t have interface for the thinner cottons. Love Kona fabric. So my question would be if maybe the fabric or needle maybe the problem or the thread maybe too thick for that fabric causing it to go down.