I'd love to get a clue about this issue - I can front load "fine art media" on the R3000, but no matter what setting I chose in the QTR print dialog the printer gives an error that the media doesn't match.
The other solution I've heard of is to increase the dry time between head passes a tiny bit, but that also does not seem to be an option when using QTR. If I am missing something please let me know!
As it is I can't print any salted-paper digital negatives due to the amount of ink they lay down, which is quite an issue since I'm supporting a class of seven students.