Perfect symmetry?

Normal 6x6 sudoku rules apply. Place the digits 1-6 once each in every row column and 2x3 box. Cells separated by a V sum to 5. Digits along a grey thermometer must rise from the bulb end. Digits on an arrowed line must sum the the digit in the arrows connected circle. Clues outside the grid sum the digits along the indicated diagonal digits may repeat if other rules allow. No negative constraints.