I have used a Combi-plan for 4 years, and rarely, if ever, experienced uneven development. Now it is happening all the time and getting worse. The problem is visible along the edges where the film sits in the channels. It appears that there is slightly less development within the channels and slightly more in a pattern spreading about 1/2 a centimeter in parallel to the channels. It is worse in some negatives than others. What stumps me is why it is getting worse. I have not changed development dilution, fixer, stop bath, or film type. Though I have tried changing my agitation technique, with no effect. My only guess is that there is some kind of invisible build up of LFN, developer or fixer residue or something similar that is effecting the flow pattern. Anyone have a similar problem? I would appreciate your guidance. Thanks, Phil.
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