My greys have always come out a bit pink/purple. Not drastically, just a little bit. But just lately they've decided to come out brown, unacceptably so. I've never used a profile as I found they just make things worse. I'm using all the same settings, haven't touched a thing. Same shirts, same paper, some ink. The only thing I've added is a fresh bottle of yellow ink (genuine Artainium).
All the other colours seem fine, including black. Any ideas? I'm using Corel X3.