Your novak's bec puts out 3a @ 6v.
Your savox can pull up to 5a running 6v at stall.
Your servo may be pulling 4 or so amps under a heavy load, if your end points are set too far it will pull 5a (or very close to it).

Either scenario is a problem.

Savox servos are a little less $$ than other good servos but not a good value IMO. Spend the extra $25 bucks next time. They are ok for buggies or other light 1/10 scale that do not run high amp draw power systems.
Or 1/8 high voltage, low amp power systems.

High amp draw SCT, fail. That and spectrum radio... fail of the year.

On reception, my friend showed up to the track with a lower end spectrum radio and could not drive as everyone was over powering his radio. He bought a low end Airtronics radio (MX-V) and problem solved.

Edit:
Ha ha... didn't see the second page. Will leave text as is though.