I had two sxx stock specs fail in a row as soon as i used my servo
still have them in the box ready to ship back for a year now
Maybe i will just go with the external BEC and mount it next to my reciever instead of having a weight mounted there.
Or you can run a separate receiver pack like I do with a HV servo. Works awesome, and you never have to worry about brown outs, etc... 300mah pack fits right inside the space under the shock tower.