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. And for one
other thought, someone just suggested to me that banding can be caused
by interference through the serial cable, although I'm not sure if
that's the same kind of banding I'm getting.

Thanks for any help,
Steve

PS: I tried to post this message several days ago, but it didn't seem to
"take," so I'm trying again. Excuse me if it double-posts.