Well, I am making progress, albeit slowly.
Terrestrial EPG fixed....thank you.
I have copied your settings, done everything else you suggested and deleted all of my timers. Still nothing if I allow "load only in bouquets" so have said no to that.
Grid now populates but only on channels I have watched and only 24 hrs ahead with a lot of gaps.
I still have to copy from Uno4KSE to get full 7 day EPG but even that has gaps after upgrading to 5.3.004.
I will continue experimenting, when time allows, and let you know if I have any success.