I would like to learn why this recipe did what it did. It looks very similar to PC glycol in composition but adds sulfite and uses more phenidone/ascorbate, two things which I would expect to cause higher contrast and small grain. Did you develop this formulation yourself or did you get it from somewhere else?
PS: I will get the darkroom cookbook soon and will have access to at least one from Ryuji's list of books about photo chemistry, so I should learn about this subject matter shortly. The next practical experiment on my list is expose TriX @ 400 and try Mark's recipe as it was intended (with full metaborate content).