You could try making one more copy of the graph,
then squeezing its width as much as possible,
such that all that remains is the y-axis.
That can be placed as the left-most item,
all others having there axis removed.
That should balance them out.
There remains a residual bar in the axis sheet,
which can be discovered by hovering.
I placed a blank over the axis to prevent that from happening.
Please see the workbook v10.3 attached in the Forum thread.
276778axis.twbx 24.4 KB