The occasasional print when being selenium toned is having small areas (no distinct shape) as a blueish color when the surrounding area of the same tone has turned to a reddis color. Why? My geuss is contamination, but of what? Not fixed enough, fixed too much, not washed enough? Ilford warmtone paper, Ilford warmtone dev, Ilford rapid fixer, 45 min wash, Fotospeed selenium at about 1:7. Any ideas?