I'm following your recommendations and re creating the whole project. It worth the effort to remove any possible variables. You responded to my PM but now it appears I can't read PM's
so I'll ask you to copy your reply here too.
1. fix the machine issues
2. clean up the vectors -
Yup part of the rebuild of the models.
3. re-create the 3D components using a higher modeling resolution setting. Sometimes it helps to create the individual components in separate files at very high resolution, and then import them into the current project.
I now know how to increase the resolution and will save each component as it's own .3dclip and .crv3d and then create the new model these individual components.
4. Adding a draft angle to components will help them machine better vs vertical walls.
This is what I don't know how to do