Hello Jeff,
Either the servo has gone bad or the wiring has.

First check that ALL the SkyView Network DB9 connections are good and tight, it is possible that the wiring issue is elsewhere from the wiring going directly to the malfunctioning servo.

Second, check the wiring at the servo itself. Because it is left to the builder to connect the bare wires from the servo into the network, it is possible that a bad crimp or whatnot has loosened on the B channel wiring at the servo.

If neither of these checks resolves the issue, call us from the plane and we will continue to troubleshoot.