One suggestion I have for Efke 25 is to presoak for a few minutes before developing. This will rid the film of the anti-halation backing layer and allow a good displacement of water for developer and even development.

If you are having some separation of emulsion from the backing, I would first suspect water temperature. Was one step in your process too hot? Try everything at 70f and make sure it stays about there.

The film normally has a pinkish tint to the clear (unexposed) base in what I've seen. Is your TF-4 fresh and uncontaminated?