I agree with Vic. Diafine and P3200 combined just do not produce good negatives. T-Max developer works well, and I suspect X-tol would be a good choice. I think the pre-hardened T-Max emulsion just doesn't soak up enough Diafine-A to give the emulsion the needed juice. P3200 seems to respond well to a longer developing time in a single-bath developer.

Peter Gomena