I have a Kenquilt. And I have never had any issues with it. I'm still using the thread that came with it. Lots of lint, but it says it is signature brand I think. Do you have the manual? Your tension can be done differently. You can unwrap the part that is wrapped 3 times or not. Time out! Gotta go look at my machine. Yes is Signature 40 wt. I've had mine 5 or 6 years, but just started using it this year. It sews perfectly. I bought it new.