Originally Posted by LJH
I think I'd back the Jobo Engineers' skills, experience and knowledge over a Layman's every day of the year.
The tolerances you refer to are to allow fluid movement over the whole film so as to prevent edge markings and/or surge marks.
It's not that they can't do it, it's just that it's not profitable
~Stone | "...of course, that's just my opinion. I could be wrong." ~Dennis Miller