Thread bunching on bottom! Only doing it when sewing heavy nylon webbing. Doesn't matter the thread or bobbin or needle (already switched out). Sews fabric fine. Was working fine days ago on
How do I sew some heavy webbing without a big sewing machine? - How Do I Do That? - Leatherworker.net
6ft x 2" Lifting Sling Straps with Heavy Duty Flat Loops 10000 Lbs Nylon Eye&Eye Web Rigging Towing Hoist Straps - Walmart.com