Add raisins to orange juice and boiling water, simmer until tender (3-5 minutes). Combine sugars, cornstarch, ground cinnamon, ground cloves, and salt; stir into hot raisins. Cook slowly, stirring constantly, to full rolling boil; boil 1-2 minutes, or until transparent and thickened. Remove from heat. Blend in lemon rind, orange rind, lemon juice and butter, stirring well. Allow to cool slightly. Blend in beaten egg, stirring well. Pour warm filling into pastry-lined pie pan. Cover with lattice strips, weaving strips into basket-weave pattern. Bake in 425-degree oven for 30-40 minutes, or until pastry is brown and filling is bubbling. Serve slightly warm, plain, or with whipped cream.