wow I'm knocked out by the response - thanks @SpondonBassed, @TheGreek, @Dad3353, @bigsmokebass, @Teebs, @Misowaki, @Grangur, @BaggyMan, @HCC - there's lots here for me to try.
First up I lowered both the neck and bridge pick ups under the G string and noticed some improvement straight away (hats off to @TheGreek!) - I ran out of adjustment pretty quick, so also raised height of the string a little. End result, definite improvement over most of the fretboard. I still don't think there's as much punch as from the other strings, but I'm encouraged now to tweak some more based on the feedback and see how much more improvement I can get. Will feed back.
Thanks again, glad I joined. And @TheGreek - your joiner joke, oh dear 🤪