Revert "Replaced InsertNextXXX() with SetXXX() in VtkStationSource where possible."

This reverts commit a008957054b091cc5d4af2e31e0293a457c87c04.
Merge pull request #262 from rinkk/VTKTest

Revert "Replaced InsertNextXXX() with SetXXX() in VtkStationSource where...