Additionally I see some strange overlapping between the series line on PrimaryY (see attached image).
Lines are created with the following borderstyle:
instrumentLine.BorderStyle.Width = new NLength(3f, NGraphicsUnit.Point); // green line
relPerfLine.BorderStyle.Width = new NLength(2f, NGraphicsUnit.Point); // black line
As the exported image will be used for print it is extremely important that the style look perfect (even one pixel difference can be seen by our marketing guys).
Thanks.
Matthias.