I am running the stock evx2 and enerland 25c 6000s( two 2s batts) and mine is running great. Sorry to hear about your issues. My emaxx was the truck that gave me all my problems. My e-revo has been golden(other than the motors die quickly, I have a castle 2200kv combo on order)
I just put a 12 volt dewalt motor to replace the 700ho and to get me by until the castle combo comes in. Before I broke the motor in tonight I tried it out. The truck did a standing backflip(nice torque). I should have some radar tests tomorrow.
EDIT:
Here is a link to my thread on the dewalt motor
http://www.rcuniverse.com/forum/m_81...tm.htm#8125737