Thanks for answering the temp/humidity question. I guess I'll write that off as a non-variable.
I used the Fine Art Pearl - Less Ink preset and still had very light roller marks on my production prints. Maybe I'll try the HP SG/Satin - Less Ink as you did and see if I get similar results. Or, maybe I'll wait to see what Ben Wolf and HP come up with as a proper preset for this paper as I know they are currently testing it. I'm almost thru my initial box of 11x17 with no good results yet. The Barite preset that is mentioned in the newest HP 3rd Party Papers doc for the Z is nowhere to be found.
I'm not sure if the roller marks affect the calibration and profiling, but I do know that I have to apply a separate curves layer to lighten the output on the Harman paper that is not needed on the HP Pro Satin. This darker midtone difference is NOT visible in soft proofing so Im not sure what's going on there either.
After looking more closely at my calibration prints using Harman FB AI, I must now say I do see very
light pinch roll marks in the black and dark gray areas. I do not see any pinch roll marks on regular prints, even using a magnifying glass in deep black areas. However, I am concerned that these light roll marks on calibration and profiling targets may be affecting the printing profiles produced on the Z3100.
I keep my room temperature at 70-73 degrees F., but do not know what the humidity is, other than to say that it is on the low side.
I used the Photo SG/Satin (less ink) preset to profile the Harman paper.
In my original post I neglected to say that all of the tests I have made are on 17" sheet paper. I'm not sure how things will look when I go to roll paper in wide sizes. I'm certainly not ready to say that my problems are solved, but things are looking better in the short run -- we'll see how they look when I am able to run some larger papers through the printer. Up until now I obviously could not justify ordering these papers in large sizes.