Profiler Stage-How do I delete the preset/factory Performances so I can start at slot 1 with my own?

You can't delete the performances. You just can set them to default and then create fill them up with your rigs.

There is no 'deleting' of performance locations. They're hard coded.

To remove a performance you don't want, in RM, right click the performance and click "Initialize Performance". That will remove all data. If you need to preserve it, drag and drop the performance to the local file in RM. Then initialize on the KPA and it's gone.

Slot 1 will always be active and, when 'empty' will say Crunch and be populated with a profile C. Kemper created long ago. This is true of any 'empty' slot and exists as a place holder. Just select the slot you want and start editing.