Unique Duo

Normal Sudoku rules apply. Digits in a killer cage do not repeat and sum to the clue in the top left. Each cage in the grid has either the total X or Y which have to be determined by the solver. Digits joined by a V sum to 5. Digits joined by an X sum to 10. (Not all V and X are given.) Digits joined by a black dot have a 1:2 ratio. Digits joined by a 3-dot have a 1:3 ratio. (Not all dots are given.) The digits on a marked diagonal sum to the little killer clue outside the grid. (If there is no conflict with other rules, digits on the diagonal may repeat.)