QTR-Quadtone RIP

Loving the program so far, especially how quickly it prints on my 2400 compared to ABW. I have a few questions perhaps someone could help me with, pleawe?

1.  I notice that the same file in QTR prints lighter than in ABW. Is this something I'm doing wrong or is it common to have to prep the file darker than for ABW? I increased the ink to +18 to get even close.

2.  Will there be curves for Epson's Exhibition Fiber Paper? Right now I'm using the "UCpk-raw" curves. Are these the right ones?

3.  I notice the instructions say the curves are built for 1440. I usually print in 2880 in ABW and I'm wondering about the differences in the 1440, 1440 super, 1440 x1440 and so on. Which one is recommended for the 2400 and EFP with the K3 inkset?

Thanks,
George