wpf toolkit scatter chart print

Hello,

I am using wpf toolkit scatter  chart.

And trying to print.

To print scatter chart is rendered to bit map images.

Some time few line in missing in horizontal and vertical axis's.

I used "SnapsToDevicePixels"  it solved my problems up to some level but not completely.

Then i used UseLayoutRounding="True" RenderOptions.BitmapScalingMode="HighQuality".

Now lines are coming but lines which were missing earlier are very dull compared to others.

Also print preview and pdf is not very clear. some fonts and stretched.

Please help me.

Thanks

Vinay