I have been dealing with issues of stripes at the top of my negatives. I thought I was due to my Jobo drum not being level, but after making sure the drum is level when spinning both directions, I still got stripes. I got them in two different processing batches and with completely different holders.

Jobo 3010 drum, Acros 4x5, rollo pyro. I pre-wash for 5 minutes with 250ml sodium metaborate solution, the process A (7.5ml & B (15ml) in 500ml of water for roughly 10 minutes. fix with 50 ml TF4 in 150ml water, then final rinse 2 minutes in 250ml of sodium metaborate solution, then rinse forever. Other than the stripes along the top, no issues with the negatives. They are nicely evenly developed.

I have enclosed a scan of the striping.

Holders? Processing? Any suggestions?

Thanks