Hello! I'm developing my friends roll of film. She shot with 35mm Ilford 400 speed B&W film. She shot it with a Pentax zx-m. I developed the film for 15 minutes, agitating for the first 30 seconds of each minute and tapping it. I then cleaned the developer out, and did fix for 6 minutes. Doing a similar process to the film, agitating and tapping. Following that I washed the film fix out and followed it with an extra rinse. Continuing it I used photo flow, and rinsed it out one more time. I then rinsed it out of the film canister, on the spool, and after 10 minutes I removed the film off the spool. The tail, was solid black, and the rest of the film was all clear. There wasn't any borders either. I still was able to read Ilford. Can anyone help me out? Thanks!