Ive been spending more time on the sheet work in the last few months as well as the additional lighting etc, also most of the shelves are powered up - just missing 2 at this point, waiting for the right colour/width LED strips to arrive.
Here is the most recent pic plus a video of the chain drive running with the lights on:
Skip to 0:30 to see the chain drive in action: https://www.youtube.com/watch?v=2qb85BCB7_E