Help VPI Scoutmaster anti-skate issue

I moved my Scoutmaster and in the process bumped the anti-skate device. Now the arm will not move beyond the halfway point of outer edge to spindle (i.e. can't play more than a few songs) because the arm hits the string.

Looking at the arm in its safety rest towards the pivot there are two round knob-like extremeties. One of these is hitting the string as the arm rotates. For the life of me, I can't figure out what's wrong. I tried watching Fremer's DVD for some frame of reference but the chapter on anti-skate doesn't actually show positioning of the device as the arm rotates.

I realize this must be simple, but having a hard time here, so if someone can point me in the right direction, it would be much appreciated.

Thanks!