  We continue work begun in \cite{ptab} which introduced \emph{perforated
tableaux} as a combinatorial model for crystals of type $A_{n-1}$, emphasizing
connections to the classical Robinson-Schensted-Knuth (RSK) correspondence and
Lusztig involutions, and, more generally, exploring the role of insertion
schemes in the analysis of crystal graphs. An essential feature of our work is
the role of \emph{dual} crystals (\cite{GerberLecouvey,vanLeeuwen}) from which
we obtain new results within and beyond the classic RSK theory.
