XTOL is a very good match for this film. Sharpness and gradation get better while grain becomes more pronounced when you dilute it. Using XTOL straight will give the finest grain, lowest sharpness and highest contrast. I prefer it 1:2 and have found no reason to pre-soak.(posted 8542 days ago)I generally use three changes of water in the course of a 2:00 water stop. Delta isn't quite as hard on fixer as T-Max films. I use around four minutes with a rapid fix.
Good luck.