The k supply was faulty and provided power spikes that blew the k capaditers. even after proving it was a component fault on the k supply not user error he only prepared to repair the supply not the k caps.
So useing Turnigy Graphene 6Ah. Battery starts to warm up if you useing over 120 so I added a 2nd but the XT90 was getting hot still.
Only need 6-10j to weld 0.15 nickle 2% of what the unit can deliver