Line a 9-inch pie pan with pastry. Mix sugars, salt and spices. Add pumpkin. Add egg yolks and milk. Add more spices, if desired. Last, fold in beaten egg whites, not too stiff. Pour filling into unbaked pie shell. Bake at 450 degrees for 10 minutes, then turn down to 350 degrees until done, about 30 to 40 minutes (depending on your oven). Pie ready when knife comes out of filling clean.