David,
Glad the clock is working out for you. I'll post here when the production version is released on the Play Store, you'll want to load it at that time.
DecoderPro and PanelPro use different preferences, so you should also compare the eStop timeout in each (Preferences, WiThrottle, Seconds until eStop). That value is what EngineDriver uses as its "heartbeat" with the server.