Thanks for your comments emill, I think the trouble is perhaps the more you read and process the more you begin to understand whats not there and it upsets the original appreciation for someone who originally just listened and took the sound at face value as either good or bad.
I think what you said about the rules sometimes diminishing a performance is quite telling. Gyzzmos comment way back at the start about the way I accent the lower C in the LH theme was/is totally valid - but I just don't hear it the "right way" where its softer and rising to the top of the wave. If I play it that was it doesnt really feel right to me. I just LOVE the sound of that crescendo, but with a strong accented resonant low C at the beginning.
.... anyway, if anyone is interested, the part of this performance that bugged me the most is here below, with marks in red of some approximation of what I intended and failed to actually do. Most specifically in relation to the first bar of the last line here. I hate hearing that back, the way the melody was played there... its just so thoughtless and brushed over.

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Hi avengeil, thanks for your comments.
At measures 7-8 you accentuate the higher note of the group, for example the first time b flat comes and then at the highest e flat. For me that stops the follow of the passage, you could try emphasizing the sense of direction on the two sixteenth notes that are repeated for example in bar 7 beat 2 the second eb d.
this is actually very deliberate.
It seems to me like you are thinking of the main theme (upbeat to measure 11) as two separate stuff. c d . and then eb eb. Maybe it all leads to the e flat a bit more directly and less lyrically than you are playing it. At times one could make the first e flat extremely small to accentuate the passion even more.
Thanks for this, I will do some experiementation around that soon.
Another example is at measure 19 and 20.... even though you are coming from a diminuendo and you should be piano the lower c comes out to strong destroying (maybe a bit too harsh of a word) the sense of direction. In my opinion that c is the subtle beginning of a climb to the e flat.
I like this also, -
as I've mentioned above generally I like the bottom C to be very strong and resonant, but perhaps in spots like this one it really is an ideal spot to not do that, at the end of that fading melodic phrase before the rise to the next one.