Digital BW, The Print

I was just very lucky to aquire a free 2400. It appears to work
prefectly except one very annoying issue. It has very slight
microbanding on all resolutions and papers I have tried so far. 

A quick search on google reveals that this is a fairly common
complaint among 2400 users, and I haven't found any solutions so far. 

Suggestions I've tried include:

- Clean print head
I've tried automatic and manual cleaning
Nozzle checks are perfect

- Align print head 
I've tried automatic and manual alignment several times. However, it
seems that the alignment is only for vertical banding. The horizontal
alignment procedure from the 2100 driver is gone. I have to wonder why
they removed it, it seems this printer really needs it.

- Try a higher resolution (Photo RPM instead of Best photo)
No improvement

- Uncheck 'High speed'
No improvement

- Try a different paper type
Selecting thicker or thinner paper types definitely affect the
banding, but "very slight" instead of "obviously visible" is the best
I can do.

- Try QTR
QTR has much worse banding in 1440x1440 super. I haven't yet tried
2880. I'd rather use ABW if possible.

I'm running out of things to try now. Any suggestions? I really love
the fast print speed and the convenient control with ABW, but I need
to be able to make gallery quality prints or the printer is worthless
to me. 

Another thing, the paper feed on the 2400 is a definite step down from
the 2100. It refuses to feed papers much more frequently than the 2100
did and seem to require frequent cleaning of the paper feed mechanism.
I can live with this however, as long as I can find a solution to the
microbanding.