Impossible to override axes using Highcharts

First - a compliment for a great module!

When trying to override chart properties by using the provided Highcharts starterkit, all works well, until you want to override properties for the x and y axes.
For example, this statement in the class ChartsOverridesHighcharts, function chartOverrides works.
$options['plotOptions']['series']['dataLabels']['enabled'] = true;

If you try to override a property in one of the chart axes, the chart will not render at all.
$options['yAxis']['tickInterval'] = 0; // Remove the Y axis line completely.

The reason for this is the naming of the functions, e.g. "setAxisY", which conflicts with the options format expected by Highcharts - "yAxis". Further, yAxis is array keyed by the axis number and xAxis is an object (single axis).