My inclination would be: 1. To wash for longer than 5 minutes (20 min?). 2. To agitate a little and then soak for a few seconds in the wetting agent (rather than dip). 3. To make sure that I have enough wetting agent concentrate in the wetting agent water. 4. To squeegee the excess water off the film after I hang it up to dry. I use Photo Flo and the above proceedures. The only time I got streaks was when I was once too stingy with the Photo Flo concentrate.(posted 8220 days ago)