Digital BW, The Print

Paul, or others using the Epson 220,

I have been printing with the UT-R2 Inks for the Epson R220. I want to
change to the photo black which I have ordered from MIS. 

1) Is there any trick to changing the ink? (I assume the printer will go
through a head cleaning after I replace the cartridge.)

2. Is there a prescribed way to store the Eboni cartridge so it can be used
again. As I recall it should be upright, wrapped in plastic wrap (or some
such).

Thank you,

--Gib