I am having some difficulty adding these leg levelers in addition to the ones already there. It appears there is something more advanced going on in the spreadsheet than just regular hardware item. It makes the bas assembly its own subassembly and using -ZM! for drawing only and ten 1.5" poplar the posts?? Anyone have any experience with these? I would love to add the DWG to view in 3D/2D and show up on work orders.