I would advise against using any of the press kits, or “simplified” kits, as they are often marketed today. The bleach fix is a bit problematic with films — especially in a setting where the chemistry is not replenished. For best results, I suggest sticking with Fuji Hunt, or similar, professional quality chemistry.
Hello Samu, do you have any samples of the issues you’re describing? I’ve been using these kits for the past four+ years with no issues. Pretty much everything you see on this blog is developed using either CineStill, Arista, or Flic Film C-41 kits.
Samu Skogström
Dmitri