E120 Classic N2K GND10 gWind

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I have an E120 Classic networked to a Pathfiner MFD at the nav station. On the Raymarine networks an analog radar and DSM30 and GPS, ST290 Data modual. I have an N2K backbone connected to the e120 NG network successfully displaying engine information from a NoLand Engineering RS11. Due to a wind transducer failure I have replaced the ST290 wind transducer and pod with a gwind transducer and GND10 black box bridge. The gwind and GND10 display proper wind speed and direction, continuous update, on a laptop connected to the network.

Problem:
When I turn on the MFD it displays wind speed and direction correctly updating 2 or three times and then stops updating. The static last measurements remain displayed while the networked laptop continues to show active data. The Pathfinder does the exact same thing.

I'm at wits end. Any suggestions?