Digital BW, The Print

Hi folks,

I recently inherited an Epson 7600 from a friend who
bought another printer.

He's been using MIS UT7 inks on glossy paper with this
printer.  It produces good quality prints but has
chronic clogging problems.

I'm planning on using MIS Eboni-6 ink; I like printing
on matte paper and have heard that Eboni-6 should be
less troublesome.

What's the procedure for changing over to the new ink?
 Drain the cartridges, fill them with new ink and then
print until I flush the old ink out?  Or is it more
involved than that?  Any help is greatly appreciated.

Thanks,

Ken