Brother VX-1100 sewing machine stop motion knob ?

I just got this sewing machine today and I tried to wind a bobbin but you are supposed to hold the balance wheel and turn the stop motion knob toward yourself and my stop motion knob seams to be stuck to the balance wheel. It won't turn forward or back so I can't wind a bobbin to use the machine now. Has anyone else had this problem? Does anyone have a suggestion on how to loosen it up so it will turn again?