My continuation of machine polishing this evening didn't quite go to plan.
Started out fine, getting good correction as you can see:
Before:
After:
But I must have picked up a TINY bit of dirt from somewhere, as the second area I did appeared to have a very minor 'haze' to it. Not crystal clear as you'd expect after polishing. Upon closer inspection, the area was covered in TINY little scratches, but not long and joined up. They are a few millimetres in size max, but everywhere. So I presume the DA polisher was making tiny marks as well as taking the big scratches out. (You can almost see them in the after pic)
So that's on hold now as I clean my pad. I may even order some new ones, as I'm away for a couple of days from Wednesday, so might be waiting for me when I get back.
Good job I spotted it straight after, as opposed to doing the whole side of the car!