poita said:

The uncorrected scan is too dark

Sure, but in that case the LAD frame is ass and pretty much useless, because correcting color based on it's different greys should at least correct the brightness (like the background behind the model being the darkest part of the image and the transparent edge of the film frame being the brightest)... but if you do that, the actual film is even darker than before.

Also once you neutralize all the greys in the LAD card, the film gets a massive red-shift.