I'm still fairly new to developing my own film, and I was hoping for some more seasoned eyes to help me out. I developed a roll for my girlfriend today that didn't turn out great. I don't think it was anything to do with my process (as far as getting the film on the spool and preventing it from touching itself, it was actually my best success by far), but I'm not sure if what I'm seeing is the result of developer that is going bad or old film. I used the CineStill CS41 powder kit, which I mixed back at the end of September. I realize this is quite a bit older than recommended, but I've also seen a lot of people saying they've been able to stretch their chemical life substantially, so I figured what the hell. I had only developed four rolls with this batch previously, so I factored that in when developing (added 2% time per roll). The film was just generic no-name drugstore ISO 400, that I believe a friend unloaded on me when she moved. No expiry date, but probably a few years old and not likely refrigerated. A lot of the pictures turned out very dark (which may have been the photographer's fault), but even on the better exposed ones there's a lot of grain and kind of a strange tint. I'm just curious for future reference, is this more likely an old film issue, or a developer needing to be replaced issue (or both)?