Sean at Castle Creations talked me through 2 diagnostics:
– Set the Soft Start option to “fast start”.
– Resolder the connections to the motor
Neither helped so he’s sending me another speed controller. It’ll be here in a couple days. I’ll be in Vermont for the 4th so no flying ’til after I get back. :-( And I don’t want to bring the Zagi. The Zagi is tired. It needs to rest.