Albumen coating the temporary support is an old technique used to improve adhesion that Tod favors but which I have never found necessary. It does work well and it is mentioned in the video of Tod making a print . I've received questions about it but I've been reluctant to describe it because of my (by now well-known) dislike of dichromate. With all the current discussions of diazo-type sensitizers that can be used to replace dichromate, perhaps this is another area worthy of exploration.