RZ67 Filmback Lightleak

[ryoku]

after i got much help with my light leaking polaroid-back, i'm here again -with a leaky filmback...
it's a version I (not the RZ67 II) back and i already replaced the old gooey lightseals with new ones, but now i have a lightleak on pretty much every frame of a roll. varying in intensity, but always vertically across the whole negative, always straight from edge to edge of the negative. did i screw up installing the new lightseals or could it be the darkslide seal? i didn't replace the velvet darkslide cover, but disassembled the back and had a look, and it had good tension and seemd fine.
so - anyone familiar with this kind of leak, or any other tips on locating the problem and / or fixing it?
very much appreciated!

 

[markbarendt]

I had a similar leak, it was actually the dark slide seals. Before the repair was made I just left the dark slide out for the whole roll.

 

[EASmithV]

Maybe the monkey is part of a witness protection program and your film was automatically redacted