Hello,

I have been developing 8x10's in btzs tubes for a while and have started running in to an issue. For xray film, this doesnt persist, but for the Berger 400 I've been shooting, it appears as though the notched end of the film gets more development than the rest. I will post an image when I get home, but it looks as though there is a light leak in my film holders even though there isnt one...

I dont know if the Berger is just bad, or my technique is off, or what. What are some troubleshooting tips for working with these tubes?