It's important the print is well rinsed first, esp if other toners have been used. I use Kodak brown much more dilute than they recommend, and very briefly, though this depends on what final effect
you desire. The trick is to get it over the print quicky, and then to get the print out quickly. I immediately put the print in a tray of plain water and agitate this to prevent uneven toning. Afterwards, a final brief rinse under the hose and it goes into the print washer. The toning will slowly
mature there, so you'll want to be careful not to overtone visually in the actual toner bath. Takes
a little practice, but if you undertone, you can always tweak it a bit more in the toner bath. But if
you overtone to begin with, too bad. So yeah, I personally prefer a simplified method.