Digital BW, The Print

Interesting thoughts Keith,

I'm pretty sure neither of these things is happening though. 

In the first case, problems sufaced immediately after installing the
CIS and new ink bottles, so it isn't a case of inks getting worse as
they settle. (Bottles now about 3/4 full, I've gone through a LOT of
ink and paper testing this - ouch.)

In the second case, tubing appears pretty much clean when it gets
emptied, I don't think too much adhesion is occurring. 

Right now I'm pinning my hopes on the possibility of a bad ink batch,
as I really don't want to have a defective CIS - but this should all
be resolved next week when new carts and new bulk bottles arrive from
MIS - if those don't solve the problem then it MUST be a CIS problem.

Thanks so much for everyone's continuing help, it's greatly appreciated.

-charley