transmission pan sealing

Been fighting this with a very slow drip. Absolutely dry above the pan rail. Tried a Moroso deep pan and Blue gasket. Still a slow drip and dry above the rail. Must be a scratch on the pan rail. I will pull and recheck, 8 quarts of new fluid ticks me off and not eager to drop it just yet! It seeps at the front between the center bolts at the rail. Very frustrating as the old deep Mopar steel pan never leaked until resto. I also wonder if the case may have a leak at the part line. It is dead center of were the seep is.