plan to finish the pie after several hours, or freeze it if you are completing the recipe at this point. This will prevent shrinkage. Melt the chocolate and butter together in a heavy saucepan. Set aside and allow to cool. Stir the corn syrup and sugar into the reserved eggs. Add the chocolate and butter, vanilla, rum and the pecans. Mix well and pour into the pie shell. Bake in the preheated oven for 1 hour, or until set. The filling will rise and then fall. Remove from the oven and cool on a rack. Serve slightly warm or at room temperature.