Plex Tablo channel has ghost channels

I started with a very bad tv antena and did the tablo setup and plex channel setup, it worked but not many channels, so I upgraded antenas and redid the scan and updated the guide. in the talbo apps it works perfect, but in the plex channel it still shows the old channels and the new ones, the old ones do not work but thenew ones do, so How do I get rid of them, I tried deleting and reinstalling the tablo channel from my plex server and also rebooting my plex server. Still there.