Hello I've been following your e-trike build. Very nice work. I just purchased two 2016 TerraTrike Rambler x24 trikes and plan to add the mid-drive motors to them as well. I was wondering if you could provide more details on your custom built battery mount. I have a 52 volt 20AH rectangular pack that weighs about 12lbs. I'd like to mount that behind the seat to free up the rear racks. Looks like I may need to get some extension cables or plan on splicing the Bafang BBSHD wiring harness.