Update:
I clocked ~820kms on this board total and I am loving this board!
…Until the battery broke yesterday… 
Yesterday, when I wend to ride, I noticed that the battery meter on my remote started at 75%. I thought maybe my charger came unplugged half way or something. I did a short ride, and plugged it in. The charger stopped charging and had the green light too quickly compared to normal. I decided open it up and measure the battery terminals. I got 46.1v D= (Expected 50.4v)
I tried another 12s charger in case my charger was broken, but got the same green light at 46.1v
I measured the BMS JST connector leads and this was my results 
I have logged around 820kms on this battery and only ~23 cycles (of which ~5 cycles is from dead to full). And have used fairly conservative settings at 60a batt max (total) and 40a motor max (each) The enclosure is sealed up well and never ridden in the rain. And the battery is well padded.
There doesn’t seem to be any visual indication of cells shorting or burn marks or anything out of the ordinary. So I am assuming something went wrong with the BMS and it drained the 11p pack 
I managed to get ahold of a local builder that does batteries so I’m just going to get him to swap out the P group and install a new BMS.
The thing that sucks is it takes 2 months to ship these cells from aliexpress :’( Hopefully someone on this forum has a few extra cells they can spare :’(
Actually so sad I can’t ride anymore 