Having thread tension issues?

This video from youtube was very informative.  I learned a lot about tension issues with my long arm from this video.  I'm always ready to learn new things and having a computer with the internet makes that so much easier.  Remember when you had to go to the library and check out books?  Remember when you had to take a class and actually get dressed?  Now you can learn in your pajamas any time anywhere, almost any place.