Thanks David.
I too don't think it's a T-Grain film, but from your description, I think I'll either stich with HP5+ when using a 400er film, or, I'm still thinking about giving the NP27 film from the Webphota Website a try. I've heard it's comparable to the Efke films, (which I just love using in ABC) thick based and single emulsion, but the stuff is pretty expensive. Any experience or knowledge of the NP27 film?