I got a Hitec 7955TG servo for my E-Maxx Brushless which I installed yesterday.
To my surprise, the receiver lost connection all the time afterwards and the servo did weird things. I tried the Servo on my Slash with the VXL-3s ESC and it worked as it should.
So, the BEC of the Mamba Monster doesn't provide enough power for that high-torque digital Servo and I just ordered a Hercules BEC to be able to run my new servo. I just don't understand that the most powerfull ESC has such a weak BEC, it seems logical theat the more powerfull the ESC is, the more powerfull will the other electronics be!