DateTimeScale showing Last year December and next year January in the X Axis Scale.

//Here is code how surface Series created..

chart.Enable3D = true;
chart.BoundsMode = BoundsMode.Stretch;
(chart as NCartesianChart).Fit3DAxisContent = true;
chart.Projection.SetPredefinedProjection(PredefinedProjection.OrthogonalTop);
chart.LightModel.EnableLighting = false;
chart.Wall(ChartWallType.Back).Visible = false;
chart.Wall(ChartWallType.Left).Visible = false;
chart.Wall(ChartWallType.Floor).Visible = false;
// setup Y axis
chart.Axis(StandardAxis.PrimaryY).Visible = false;
// setup Z axis
NAxis axisZ = chart.Axis(StandardAxis.Depth);
axisZ.Anchor = new NDockAxisAnchor(AxisDockZone.TopLeft);
NLinearScaleConfigurator scaleZ = new NLinearScaleConfigurator();
scaleZ.InnerMajorTickStyle.Visible = false;
scaleZ.MajorGridStyle.ShowAtWalls = new ChartWallType[0];
scaleZ.RoundToTickMin = false;
scaleZ.RoundToTickMax = false;
axisZ.ScaleConfigurator = scaleZ;
axisZ.Visible = true;

// add a surface series
NGridSurfaceSeries surface = new NGridSurfaceSeries();
surface.UniqueId = new Guid(outputVariable.UniqueId);
surface.Name = outputVariable.LegendText;
chart.Series.Add(surface);
surface.Legend.Mode = SeriesLegendMode.SeriesLogic;
surface.ValueFormatter = new NNumericValueFormatter("0.0");
surface.FillMode = SurfaceFillMode.Zone;
surface.FrameMode = SurfaceFrameMode.Contour;
surface.ShadingMode = ShadingMode.Flat;
surface.DrawFlat = true;

// Already set this property, what it will do it cause to hide extra axis in line chart and bar chart
surface.InflateMargins = false;


surface.FrameColorMode = SurfaceFrameColorMode.Zone;
surface.SmoothPalette = true;
surface.Legend.Format = "";
surface.FillMode = SurfaceFillMode.Zone;
surface.FrameMode = SurfaceFrameMode.Contour;
CreateSurfaceSeries(outputVariable, surface);


chartControl.Refresh();

How can i prevent this to show extra labels in the scale?