Bough a (new to me) Bonanza K-35 back in April, it came with a GNS4330W and GTX330ES, ADS-B out enabled. All seemed to be fine, but recently, about 2-3 months into it, all of a sudden, I started to notice the "NO ADSB" flag on the GTX330ES screen. Did the usual customary online research and checked the settings. Still has the flag... when I look up the ownship info on ForeFlight, it shows up sometimes, even when the NOADSB message is on. Any ideas what could be going on? Thanks in advance.