Just wanted to post this info from Dustin on the list serve about a source for S - Hooks
Just thought I would share a resource for s hooks and about any other type of hook imaginable, http://www.mightyhook.com. Mightyhook recently did a custom order of art rack hooks for us and I was really impressed by the quality of the product, the service and the price (about 20% of the price quoted by a storage system company).
If any one is interested I believe the part # created was 312SS-LV-90-HDM.