  In recent years a new potential symmetry of fundamental particle physics has
been investigated --- discrete quark-lepton symmetry. When this symmetry is
implemented, however, it often leads to either of the unrealistic predictions
$m_{u}=m_{e}$ or $m_{d}=m_{e}$. This paper considers two possible ways models
based on $m_{d}=m_{e}$ can be made realistic.
