Update time,
I figured that the eBoosted Jetspud SS enclosure would be a good fit for my Sector 9 downhill deck and battery layout, so I committed. Now time to put things back together again.
This was my first battery build/rebuild and to be honest it was absolutely time-consuming and daunting. It’s not quite that HD hardcore battery porn, more like amateur hour battery porn 
All up I’m pretty happy with the outcome considering this is my first DIY and big thanks to everyone who helped out with parts and advice.
