My first attempts at C-41 processing with a tetenal kit were mildly successful, and I've since moved to using kodak developer and a separate bleach/fix. I had horrible color shifts and stains at first, which I attributed to insufficient washing between dev. and bleach (I'm using a ferricyanide bleach). Here's a control strip that I just developed next to the reference strip: The base is a bit more orange and a bit lighter. You can't see it on the scan, but the black is darker on the reference than the one I developed, so I'm suspecting underdevelopment. I've been doing my processing like this: 1. Pre-soak @ ~100F / 1-3 minutes (while I wait for the developer to heat up) 2. Develop @ 100F / 3:15 minutes 3. Stop @ ~100F / 1:00 minute (acetic acid, pH = 4.5) 4. Wash @ ~100F / ~3 minutes 5. Bleach @ ~100F / 6:00 minutes 6. Wash @ ~100F / ~3 minutes 7. Fix @ ~100F / 4-5 minutes (TF-4) 8. Wash @ ~100F / ~10 minutes 9. Stabilizer @ ~100F / 1:30 minutes I noticed that 1 minute is usually the recommended time for the pre-soak. Will a longer pre-soak mess things up? Other than that, I'd suspect my temperature is off. I only have one thermometer and no way to tell how accurate it is. Can anyone enlighten me?