Digital BW, The Print

Hi all,

After a long layoff, I'd like to get my hands inky again
trying some of the new glossy fiber-style papers with my 
UT-7/2200/IJC setup. I've been working with matte until 
now (EEM for proof, HPR for finals) so this is new ground. 
Especially, I want to be able to print pictures with 
expansive black areas -- white flowers against
a black backdrop, for example.

Two simple questions:

(1) Ink: What's should I be swapping for Ebony nowadays? 

(2) Wheel marks: the couple of times I experimented with 
Kirkland glossy, I wound up with pizza wheel tracks and (if I
remember right) rubber roller marks. I tried wedging up the
guide wheels with wire ties, but then (again, if I
remember right) the paper feed was compromised. Is this 
just something I need to live with on the 2200?

I'd appreciate any reports on similar setups that are producing
good results. I'm trying to resist the urge to get any of the 
x800 K3 printers for a while and see if I can make this setup
work for glossy, as the printer itself is still pretty reliable
(and I have spare empty carts for the PK.)

Thanks, 
David