Hi Team,
I am Using SilverLight Chart control for our application. I need to achieve the below. Please help me.
Current feature:
In the attached image "SL_AppUsage_1.jpg", We draw the a chart for showing particular task done in a day ( ie,no.of minutes spend for the particular task between  0 - 23 hours in a day)
(1) As highlighted (using tooltip) in the image, most number of values for the above task occurs at the time 8:16 AM . Let us consider the point in the graph as “A”.

(2) As we shown hours in X-Axis and Minutes in Y-Axis, the Circle “A” is being shown automatically. This point lays correctly with respect to Y-Axis (16^th minute) but not accurately with respect to X-Axis.
Expected feature:
(3) What we need to do is, need to place the Circle “A” little bit right side with respect to X-Axis as shown in the image (small circle manually drawn in Violet colour in the image). So that it may mean that 8:16 AM in X-Axis.

Basically, each point along the xAxis corresponds to the Yvalue rendered above it. One thing which you can consider is altering the layout mode:

http://www.telerik.com/help/silverlight/radchart-features-layout-mode.html

Other than this, you need to ensure that the point along the xAxis has the proper yvalue.
Let me know if I am leaving something out.