Jagged Curves When Pasting from Clipboard
When pasting vector-based graphics into the Symbol Factory from programs like CorelDRAW! or Visio, the curves become jagged. It appears that smoothness and resolution are being lost in the conversion.
Before copying to the clipboard in Visio or CorelDRAW!, stretch the image to fill up most of the page. If the image is very small when copying, some of the resolution may be lost due to rounding errors.
Also, make sure that you are truly pasting in a windows metafile graphic from the source application. Some applications may copy out a bitmap by default.