Alright ... so update, since I can't seem to fix this problem. For starters, it's too faint to accurately catch with my camera. So hard to show here (which I know, just complicates it).... .but the hazing is definitely magenta, and also, it won't print a good solid red. It leaves the wave pattern in it. It doesn't do this to any other colors.
With head gap at high, it's noticeable. With head gap low, it cuts the hazing almost down to zero. But it still won't print a good solid red, either way.
I cleaned the entire encoder assembly... no changes. I soaked the head 3-4 times and ran multiple strong cleanings... no changes.
Nozzle check looks fine.
What do you think I might be missing here?