question about tension
 

I am fmq. If the top tension is on 0 and is still too tight, how do I adjust the bottom tension ? I only have tension issues with fmq. thank you

what she said. and start with only small turns!

If the upper tension is on 0 and is too tight, the thread might be wrapped around the spool pin or hanging up on something. I'd re-thread the upper thread. Then if it doesn't change with re-threading the top thread, the bobbin thread might not be under the tension spring. I'll bet if you re-thread top and bottom, you'll be alright.

Are you using an electronic machine? If so, you can set the tension to zero. If you have a dial, you often can continue to twist it to continue to loosen the tension. If you do decide to adjust the bobbin tension, use a fine tip sharpie to mark the starting position in case you want to go back to the original tension. As mentioned, make very tiny adjustments!