I posted a link to a discussion about using the 2800 drums for 8x10 film and in that discussion I noted that FP4 8x10 would occasionally stick to the drum and it made permanent marks on the back that did not go away with re-fixing and/or re-washing. So, there are some combinations of film, developer and drum that don't mix. Presently I use both the expert and 2800 drums with T-max developer and Ilford HP5 8x10 film without getting marks on the back. I even wash the film in the 2800 drums but I rinse the back of the film in a tray of water before the photoflo.
Originally Posted by LJH