Throttle glitch

Ok Troy I just read jayboy's bec thread and I think I know the answer already. My rockfighter has a glitch in the throttle when you steer left or right it stutters and jumps but as soon as you let go of the steering it goes away . I have replaced the original front servo with one from another car unbranded but was working ok so far in this car. Does this sound like a power problem it has a novatec twin motor esc has been ok not verry old may be 5-6 packs through it and servo 2 packs in this car . It is a spare car so it gets all the leftovers.The last servo broke the gears internally.

Ok I soldered a cc-bec 10amp in. An it seems to have fixed it although it seems to eat battery's now I set it at 6.2 v.