Hi Camduct1

I don't know why your dotted line bounding box on your nests aren't showing. 

Regarding the nesting gaps, there is one other place the effects the nest spacing and that can be found in the setup of your tool. You may have a 'Nesting Margin' set and this will be the boss!

You can ask your Autodesk Partner that you bought CAMduct from to get support. You can also log a support request with Autodesk about your problem.