Slice the eggs in half lengthwise and carefully remove the yolks. Press the yolks through a fine-mesh sieve into a mixing bowl. Add the mayonnaise, sour cream, salmon, dill, lemon juice, pepper, and salt. Stir to blend. Spoon the mixture into the egg whites. Cover and chill for at least 1 hour before serving. Sprinkle with chopped dill before serving.