Hi all, I've been developing my own film for a little over a year now. First results were very positive, the negatives would always be nice and even, good natural colours. Now I seem to be having more and more issues, mainly with 120 film. I seem to always get patches or streaks of uneven colour. 35mm I've managed to sort this for, I just make sure to give a nice hot presoak so it's all evenly wet before developing, and I make sure to go heavy on the agitation. For 120 I've had less luck, no matter how much I agitate (and I've really gone ham on it a couple of times) there are always uneven patches. I use a large plastic tub to keep my chemicals and tank consistent temperatures, heated by a sous vide the entire way through, so I'm confident that's not a factor. Age of chemicals doesn't seem to make a difference in the evenness for me so far. Plus I've had some shots professionally scanned and they still come out with unevenness, so I don't think it's my scanning process. I've attached some examples below. The only thing I can think of that has changed since I started developing is I've slowly started developing at higher temperatures as I've got more confident. I think I started at 20 or 25 degrees, moved up to 30, now up to 38.5, with timings taken from my kit's manual (digibase c41). I always give the bleach and fix extra time, and I've rebleached/fixed some shots with no changes. My only thought is that with shorter development times there's more chance for unevenness, and longer/colder development means for agitation for inconsistencies to even out. I'd be very thankful for any advice.