seems that I have found something to help with this
i.e. where to edit an xml entry in database for channels
such as reported in this bug post > [BUG REPORT WITH SOLUTION] Channels not showing up with WinTV-dualHD
I was able to get channel 4 HD listed as it should be as it is incorrectly listed on the right during channel pairing as “protected” when it is broacast unencrypted and clear > https://en.kingofsat.net/find.php?question=channel+4+hd
so although there may be other error in channel pairing I was only interested in Channel 4 HD at the moment
