I'm sorry you're still having troubles with your knotter. They can really be irritating when they're not working properly.
One procedure that I've found to be helpful is to trip the knotter clutch and have someone SLOWLY turn the flywheel while you watch the knotter (especially the billhook and stripper arm) as you go through the cycle to see why the knot isn't forming properly.
I do everything by myself so I don't have anyone to turn the flywheel, so I trip the clutch, turn the flywheel until the knotter starts to turn, and then jam a plastic wedge between the flywheel and the frame of the baler to hold the flywheel in position. I can then examine the knotter to see what it is doing.
I wish that I were anywhere near Oklahoma to try to help you.
Tom in TN
PS. Did you view the youtube of the New Holland knotter training film?