In a medium-sized bowl, combine potatoes, chopped eggs, chopped onions, chopped dill pickles (or use 2-3 tablespoons of dill salad cubes), and chopped pimentos (if using). Add mayonnaise (or Miracle Whip) one tablespoon at a time until satisfied with creamy texture. Add mustard a little at a time until satisfied. Season with salt. Stir together.