Mark, thanks for your reply -- the word from you and a couple of others is a bit of a relief, to know that I am not the only one with this persistant problem. In fact, I suspect that drying marks on Agfapan 25 are a lot more common that many suspect -- because they are not particularly evident where there is a lot of image texture. I am currently shooting outdoors and often use a lot of cloudless sky in my images -- the perfect stage for processing gremlins.(posted 8622 days ago)One way to tell whether the marks exist, even with a highly textured image, is to look for the deformation of the film base. You have probably seen these, Mark -- if you look at the non-emulsion side of dry, processed Agfapan 25, you will see shallow indentations of the film base. That is, the film is not perfectly flat but has slight, gradual indentations. These are the sites of the drying marks.
Apx25 film base feels to me much flimsier, less stiff than that of Tmax 100 -- which I imagine might contribute to this problem. I asked Agfa if their film base was thinner or less rigid than that of Kodak, but I got a non-answer.
I bought sponge tongs and have begun wiping all of my Agfa film dry.