Let me be clear(er) the Z mod here so just so I can now reach my table, since I raised it (the Shapeoko Rails) using these lift plates: (I talked about them on the forum somewhere…I think I even posted the files)
They were designed to (a) be easy to made (b) Single side machining (note they need to be c’bored on the backside which did at my drill press), (c) do not require ANY cutting of the Shapeoko, but does require drilling/tapping of two holes…using the lift plates as the drill jig.)
