You might have realized your initial part is not ideal for molding. Air might get trapped or it could take too long to fill up or cool down. If you wish to modify your original part, you could create a new configuration. Then you can apply the same tests you used on the newer part to see if your modifications have made any improvements. The video below will explain how to do this.
You can also download instructions by clicking here.
The CAD model used in the video can be downloaded by click here.
The next blog post will explain how to create runners in SolidWorks Plastics.