Jonathan: Thanks for the VERY helpful videos and the SketchUp model. I just got my two sets of Sys-AZ drawers yesterday and am hoping to build two Sysport cabinets this weekend that will have a detachable countertop in between them for a miter saw and room for another rolling cabinet or a shop vac underneath. I will be using 18mm plywood and had a rough draft drawn out in SketchUp (see attached screenshot). For the middle divider, I was going to drill the shelf pin holes all the way through, but I just I remembered a comment in your first video (at the 8:45 mark) noting the required 13mm depth for the shelf pin holes and suggesting doubling up on the divider width. On your SketchUp model, you do show a single divider of 18mm plywood. I am wondering if, after installing your drawers, you determined that a single piece of 18mm would be sufficient. Thanks!