AS no one has responded so far... I have not tested DiXactol so far as I have not seen it in Germany. But having used two bath developer I can tell you that most films have a similar processing time. The reason is the limit of adsorption of the film, a certain film can pick up a certain amount of developer in the first bath, most times will be around 4 to 5 mins (may vary with developer concentration). While development in the second bath is until the exhaustion of developer from first bath, so times for different films should be closed as in bath one.(posted 8810 days ago)Nether the less an improvement can be possible by fine tuning the times for individual films.
I do assume that a small Masko tank is a roughly 500 ml tank for inversion.
Wolfram