Hi. I can't seem to figure out how to adjust the tension on my extender. I turn the knobs, but nothing moves down over the lines like it is apparently supposed to. No matter how much I turn the knobs, the tension does not change. What am I doing wrong?
http://i53.tinypic.com/2hh0p77.png
This is the bottom half with the tension and knobs.
http://i53.tinypic.com/2hh0p77.png
This is the bottom half with the tension and knobs.
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