I have a batch of Microdol-X I hadn't used in a couple of months. Then the other day when I developed a couple of rolls of 120 Delta100 in it I noticed the grain is a lot more pronounced than usual... Actually looked pretty neat and has a nice texture to it. But not what I normally get with fresh developer. Is it the developer, or did I do something else silly? After Microdol-X 1:1 12min 68F, with per-minute agitation, I give the film a 30 sec rinse in tap water, and then 4 min in TF-3 fix. After that a rinse in tap water and final rinse in filtered water with a little PhotoFlo. Same as perhaps another 50 rolls before it.