Quote Originally Posted by koraks View Post
In my experience (which does NOT involve the Stearman, but I'm familiar with uneven development issues), 510 pyro is more finicky than Pyrocat in this sense, and Pyrocat is more finicky than all non-staining developers I've used so far. So basically 510 pyro was the 'worst' of the bunch in terms of getting even development especially on sheet film. This of course does not guarantee even development with another developer in this tank; I'm sure others with first-hand experience with the Stearman will chime in, but I remember having read about more problems.
Interesting because looking back through some previous PytoCat 4x5 negatives on the odd one I do see this issue but not all and with with HC110 I don't see it at all. I am not experiencing the issue with 510 on 35mm so your observation about pyro based developers been finicky may be a very valid point here.