Lately I got hold of some Kodak T400CN, the ancestor of BW400CN. The expiration date is 2001. Since it is developed with the C41 process, should I shoot the film at speedbox or one stop slower as it would be the case with a regular color film? Another question about it, although it must have been discussed quite often in this forum. What would be suggested for developping the film with B&W developper (developper + time)?