Originally Posted by Irvin
That tells me it is not a brake adjustment. That lever is binding somewhere. Chances are if you take it all apart you may not get it all back together right and if you do the tension adjustment will not be linear. I would suggest you send it back if it isn't something obvious you can fix.
Sometimes the brake disc gets warped or sections of the disc gets glazed over.
Try the brake adjustment, if it doesn't work, them send it in.