Digital BW, The Print

I've recently begun printing with MIS full spectums on Royal Renaissance
(photorag) 309gm. with my Epson 3000, using the Roark curve.

Firstly, I would like to thank Mr. Roark for inventing and making public
his wonderful curve, which really turns the old 3000 into a great photo
printer. The problem I'm having, and I gather I'm not the only one, is a
slight micro-banding, especially visible in areas of flat tonality. I
get a little less banding with the thinner version of this paper, but I
like the weight of the 309gm. I'm feeding the paper with the
straight-through method, with the print head set on +.

I'm wondering if anyone has experience with the Piezo driver with these
inks with a 3000, and whether I would experience more or less banding
with that. Also, I was wondering it there might be any printer
modifications that might reduce banding with a thick paper, such as
increasing the print head height even more than the + setting allows.
Other than removing pizza wheels, I've never tinkered with the mechanics
of the printer, so I don't know what's possible with this.

Thanks for any help,
Steve