Place eggs in a saucepan and cover with cold water. Bring water to a boil and immediately remove from heat. Cover and let eggs stand in hot water for 10 to 12 minutes. Remove from hot water, cool, peel and chop finely.
In a mixing bowl, combine tuna, crabmeat, mayonnaise, sour cream and mustard. Stir in chopped egg, dill weed, lemon pepper, dill and sweet relish and chopped onion. Mix thoroughly.
