Thank you for contacting us.
We already have this issue logged in our Feedback Portal - FIX. RadChartView - If one sets the LabelFitMode of a CartesianAxis to Rotate the chart layout is incorrect
The issue was fixed in release Q3 2013 SP2, version 2013.3.1328. You can see both attached images which demonstrates you the difference in old and new version.
If you use Q3 2013 SP2 or newer version and the labels are not formatted correctly, please send me a sample data to reproduce the experienced issue.
If you use previous version of our suite, unfortunately there is no workaround for this issue. You can use another way to space out axis labels like the multiline labels.
Let me know if you have any other questions.
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