  Normalized hypercubic smearing improves the behavior of dynamical
Wilson-clover fermions, but has the unwanted side effect that it can
occasionally produce spikes in the fermion force. These spikes originate in the
chain rule connecting the derivative with respect to the smeared links to the
derivative with respect to the dynamical links, and are associated with the
presence of dislocations in the dynamical gauge field. We propose and study an
action designed to suppress these dislocations. We present evidence for
improved performance of the hybrid Monte Carlo algorithm. A side benefit is
improvement in the properties of valence chiral fermions.
