ive been shooting the tmz for about a year now, and just last week had the pleasure of meeting a pro who's been using it for over a decade...(posted 8140 days ago)i had been using edway fg7 1:15 with a 9% Na2SO4 solution, and the results were pretty good...
i just got some tmax develeper, and processed my first roll with that today, and the results seem better, but the film's still wet and i haven't had a chance to inspect it yet...
one thing you can do to reduce grain is to "effectively" pull the film, but don't think of it like that...
when you meter, meter to expose the darkest shadow where you want detail as middle grey... i use a hand-held seikonic, and just get a reading in a dark shaddow... expose at that (probably 2-3 stops more than what the in-camera meter says)
when you process the film, only develop for 60% of what the package tells you (e.g. kodak says that tmz exposed as iso 1600 should be developed for 8.5 minutes in tmax developer... i meter at iso 1600, but in the darkest shadow in the scene, and develop for 5 minutes, with good, albeit low-contrast, results)