Canaboo - it is rubbing on the carbon. You can see the uneven surface there so I think I have enough material to file some off - but I'd rather not monkey about with that and re-varnishing it etc.

Scooper - I'm pretty sure I can add a small washer to move things slightly out, but possibly only 1mm. It is a Hollowtech type crank (Dura Ace 7800).

It is only just touching, but once I put my 95kg and a few watts down it will rub a bit more!

Hopefully swapping to a compact solves the issue, but if not I'm sure I'll be fine with a washer and also filing off some material. Plenty of options - just looking for the easiest!