marciofs, read Kodak's publications. They are very clear, and also explain the pros and cons related to replenished development. See Kodak's XTOL technical publication for specific instructions on how to run replenished XTOL. For a more general discussion about replenishment, see the section on replenishment in the following publication:

http://www.kodak.com/global/en/profe...Pubs/o3/o3.pdf