kent-
Normally, you would just adjust the coordinates of the selected art position in the conveyor module. But, this is a different animal since all the art can be selected at different coords. I haven't tinkered with the grid script in a long time, so I would need to take an extended look at it. For a quicker response, I would shoot the dev Raygun an email and see if he can give you a definitive answer, as this was his creation.