Help with Cibachrome-A Print System DY-Drum 8x10in

Dear Forum Members

I have recently purchased a Cibachrome-A Print System DY-Drum 8x10in with a view to developing 8x10in RC B&W papers. Much to my surprise the drum seem to fall shorter of a good half an inch to fit a 8x10 paper. I do not know if I am doing something incorrectly but I kind of tried every possible way to slide in the paper (and there are not many as the item is very basic). If someone who has ever worked with this drum could give me an hint I would be very grateful.,

Thank you

Kind Regards

Simone

Well it does go in long side first but surely you must have tried that.