I have a number of videos on my web site about kneading. In teaching
classes I found two constants were that people were sure they knew
how to knead and that they didn't know how to knead effectively. You
might look at http://www.sourdoughhome.com/kneadingconverting.html
Also, many people have luck with an alternate technique called
stretch and fold which I feature at
http://www.sourdoughhome.com/stretchandfold.html
The videos are a bit large, so it helps to have a fast connection.
Mike
Mike Avery mavery at mail dot otherwhen dot com
part time baker http://www.sourdoughhome.com
Once seen on road signs all over the United States:
He tried
To cross
As fast train neared
Death didn't draft him
He volunteered
Burma-Shave