Thanks. I figured it out while talking to a friend today. He told me that the DS410 may be sucking up a lot of current when the Vbar tried to operate it as true digital servo. The BEC bogged down trying to supply current to all 3 of these. As a result, BEC shut down when it is overloaded. I guess configuring them as analog servos in the Vbar software would be OK. I will be able to tell soon.
I still can't understand why Align labeled them as digital servos
