Align Text On Axes Label - Perspective Power Chart

I currently have a power chart that is configured to show a label on the axes. Is there a way to align the text so that it's centered on the axes instead of being at the top? I've tried a few things but can't seem to get this working.

The axis label is part of an SVG definition. I suspect your regular style modifications won't work here. Someone will be along to help ...

Hi did you find any solution?