  At a fixed lattice spacing, as determined by say m_\rho, adding additional
fermion flavors to a dynamical simulation produces rougher gauge field
configurations at the lattice scale. For domain wall fermions, these rough
configurations lead to larger residual chiral symmetry breaking and larger
values for the residual masses, m_{res}. We discuss ongoing attempts to reduce
chiral symmetry breaking for N_f = 3 dynamical domain wall fermion simulations
by different smoothing choices for the gauge fields.
