Robo3D Y-axis smooth rod upgrade for stock bed REMIX

User reported design works with KickStarter version.
Get $30 worth of parts upgrade of your bed without buying $110 upgrade kit.
!!! BONUS !!!
Moving the Y-End Switch back by 5-7mm will give your bed 270mm motion instead of 250. Almost 20mm more print space for free :)
May have to drill bed mount to allow smooth rods to be inserted.
!!! EXTRA !!!
Print "330mm Y Axis.STL" to get 330mm on Y Axis.
This print will require two 470mm long smooth rods.
!!! ALSO !!!
BedMount Y Motor on