There is a line on the side. Below it are two marks (the range) .
With the current boot(the one for which it is mounted) in
the binding, see where the index mark falls.
It should be either side of off center.
So, it is possible that if your boot is not too small,
you could readjust the forward pressure, which
would still have to fall within that range.
The range is showing the limits of travel for
the forward pressure screw on the track.