The crown looks fine, no sign of damage.
The barrel wiggles ever so slightly, maybe a couple thousands of an inch; seems pretty normal.
The porting holes I'm not sure about. I assumed it was factory porting, as I was told by the dealer that I bought it from. It was used and didn't come with the original box. I attached a couple photos; if you have a ported Witness, do these look factory?
That said, while the porting in the slide looks fine, if I look closely there are some very tiny burrs on the holes inside the barrel.
The funny thing is, it does shoot acceptable groups, just real low. Inside of ten yards or so, it's close enough, but the problem becomes much more pronounced at farther ranges. I can bust milk jugs fairly regular out to 100 yards with my S&W629, so I'm not totally incompetent.
Now that I think about it, I had a similar problem once before, a long time ago. I replaced the shot-out barrel in my Ballester Molina .45 with a Colt series 70 barrel. It shot really low. Someone who knew a lot more about them than I did gave me a different barrel link for it and that solved the problem. That doesn't seem to apply at all to the Witness, though.
Maybe I should be looking for a replacement unported barrel for it. I really don't care for porting anyhow.