Swap color channels in Epson Pro x900 (7900, 9900 etc.)

[Vogelkop]

I own an Epson Pro 7900.

It prints perfect except for the well known printhead issue that causes most of the black and a bit of the yellow to 'disappear'.

I am 95% sure it is not clogged, but a hardware (software?!) issue.

I had the printhead out for inspection.
There are lots of ink and I have a lot of extra Photo black inks as well.

So.. I want to either:
1. Swap black with either the green or orange channel and somehow remap in software

2. Set up the printer for Piezography, preferably with the ink that is in the machine

Can anyone advice me on which route I should take?

Thanks!

 

[Ink stained Fingers]

You would need a kind of RIP software which allows you to swap the inks per ink channel; but RIP software is pretty expensive.

 

[Vogelkop]

Yeah, but which RIP would be able to?
I asked EPSON RIP by Shiraz Software and they told me that they could not, because of their agreement with Epson..