You can turn off the borders around the bars from the Values Grouping Editor\Appearance(tab)\Border Style button.
Regarding the wrapping - you need to switch the labels in range mode, before the range overlapping settings take any effect. This can be done from the Axis\PrimaryX\Scale(tab)\Categorical (tab)\First Level Label Fit Mode combo - it is "Level" by default and you must switch that to "Range".
Hope this helps - let us know if you meet any problems.
Nevron Support Team