Have assembled the finished controller stand and battery box with RP spacers & back box. All is perfect in terms of fitment, nice and tight. However the top back of the box still feels bit unsupported so a Y-bracket needs to be made to give it a bit more support, most probably one that fixes to the new seat stand lug. Other than that just a lid to make for the box, a couple of issue have stand in the way of this progress. A new plan to run wires over the battery requires the installation of the BMS so a lid that covers the BMS and rear panel can be designed. The controller is rock sold once pinned into place from the underside and the back. Think that a couple of loom plans are needed to set all straight right now.