Need help with a Bogen Manfrotto 400 (3263) geared head.
I just got a Bogen Manfrotto 400 (3263) head (new). There is something I can't figure out how to do. One of the head angles is adjusted with a round cylindrical knob on the side that is covered with black hard plastic. It doesn't seem to turn. I don't want to force it. Does anyone know what I need to do?
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