.net chart axis customlabel angle at rowindex > 0

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C#

.NET

Visual-Studio

MFC

chart

Using VisualStudio WindowsForms Form. Creating Chart control in designer.

I'm trying to add some customLabels on charts Axis along WITH the default labels.
To do so I add customLabels with RowIndex property =1. Thus I see default labels AND my customLabels.
Now the problem is that default labels are rotated correctly, but my custom labels are not.

What I have tried:

The Axis property LabelStyle.Angle affects only labels that are in RowIndex = 0, i.e. default labels.
And if I put customLabels at RowIndex=0 - all default labels will disappear.