I'm using a Rolleicord V, recently serviced so I don't think the problem is the camera. The film is Ilford HP5+, and I'm using Nikkor tanks. But one clear edge is narrower than the other - not a serious problem, it just makes it difficult to read the frame numbers on the narrow clear edge side. And I have to confess to a little streak of OCD! It could be that I didn't get the paper leader centered properly on the take-up spool. Any thoughts? PS I did do a search before posting this.