The 100% polyester will only "accept" thread when I pull the material tight while sewing.
But at the beginning and at the end this is a problem, cause once the end disappears under the foot, I can't pull it tight anymore.
I tried all the settings on the machine, without luck though..
Do you know how to do this ? Please let me know..

Here a short video to that might help with explaining...

http://www.youtube.com/watch?v=WTNU7ofUeMQ

Thank you very much in advance for taking the time to check this !