RE: What the heck is going on with my Tsunami?
I'd highly recommend the tenergy propel cells. I would NOT recommend the other tenergy cells as they are very poor for brushless. I built 2 packs out of propel cells in a 6 cell SxS. I'd also recommend deans connectors which will help with any resistance.
[link=http://www.all-battery.com/index.asp?PageAction=VIEWPROD&ProdID=1992]Propel 6 Cell Stick[/link]
[link=http://www.all-battery.com/index.asp?PageAction=VIEWPROD&ProdID=1991]Loose Propel Cells[/link]