A few years ago, a film developer maker/ Seller (sadly no longer with us) in the UK told me that although there were benefits to be had from pre-soaking films to remove anti-Halation dyes, and all the good things about developer take up and tempering the film, this had the negative (!) effect of removing integral developing chemicals that the manufacturers place on the film to assist in the development process. This was in response to some problems I was having with a certain film and one of the makers developers. I'd not really thought much about this since, but a discussion on another forum has brought it back to my mind. I cant find anything on google, here or elsewhere, although I may be searching with the wrong terms. Does anyone know if this is the case, or is it one of the many myths that go around about film?