Speaking of taco method, I keep trying with my 4x5, and I end up scratching my film over and over again.
Initially I thought my Paterson Universal tank was too short, and that's why I kept scratching the corners where they are compressed by the black funnel.
I got a 3 reel one, and now my problem is that with either rubber bands or with fabric sleeves some of the sheets unfold inside, stick to the wall and are scratched by the rest of the sheets.
Finally, I counted all the film wasted, all the negatives lost, all the effort invested, and the money for the three reel tank, and I figured I should have bought a Jobo system in the first place.
So, now my 3 reel tank is going to the storage box, and I am getting Jobo 2520 drum and Jobo 2509N reel.
If I was shooting 5x7 I would have gotten Jobo 3005 expert drum.