Thanks everyone for replying (and guru for the email).
First off, I agree, I need to post some video. I have no doubt the right answer is in here.
One thing I would like to tell you (cos I'm proud as hell of it) is that, as Jack said, I 'danced with the partner I brung' today! At the range before the game, the same issues were repeating. Ball position is good, alignments (certainly feet) are good. The same problem appeared though. I decided to go at it all day with a fade and guess what, I shot 68, 1 under par.
I am by no means saying this is resolved, I'm just delighted to be able to know I've a problem and work round it and shoot a score.
__________________ The student senses his teacher’s steadfast belief and quiet resolve: “This is doable. It is doable by you. The pathway is there. All you need is determination and time.” And together, they make it happen.