I do a lot of E-6 (of my own shoots) in my sink-line 3.5 gallon processing set-up. I normally mix up E-6 fix for the short 2 minute fixing time. I used to do a lot of C-41, but that abruptly stopped a couple years ago leaving me with a lot of C-41 fix concentrate. Can I use this for E-6? All my chemistry is Kodak brand.