BTW: Do you have a leather case for the camera? Keeping it in the case while there is film inside is another way to minimize the possibility of light leaks.
That's exactly what I am doing now. I keep only the lower part of the ever-ready case, which protects it from light. I know this will work because the blue stripe, in my roll with the problem, was only in the last frames. I shot most of the roll with the ever-ready case, in the historical centre of Rome, but then took some pictures in my house, on a tripod, and so used the camera without the case.
The frames affected were the last ones (four or so) among those taken in the historical centre and then the ones taken at home but not the last two or so. Considering that the roll is rolled in the receiving sprocket with the emulsion "outside", I infer that the frames taken in Rome which were affected were the last ones because they were hit by the leak while they were rolled around the receiving sprocket.
The last two frames were not affected, which means the leak is in the right side of the back, not the left (where the transparent window is). They are not affected because they never reached the leakage on the receiving sprocket.
The leakage appears on the lower side, so it's on the upper side of the camera. Upper-side-right is the small dent in the foam.
The only real problem I have in confirming this is to waste a roll or two. I'll have to buy a couple 12-frame rolls, I guess.
I don't understand why is the leakage blue. If the leakage is from the foam, I would expect a white mark.
