Back in the swing off things

Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. Digits along a bold grey line must read the same thing forwards as backwards. Clues outside the grid give the sum of the digits along the indicated diagonal, digits may repeat if other rules allow. Digits in a dotted cage without repeat sum to the total in the top left most cell of the cage (if given). Cells with a grey highlighted square is even parity. Cells separated by a black dot has one digit double the other (1:2 ratio). Cells separated by a white dot are consecutive. No negative constraints.