Digital BW, The Print

Hi,

I've been evaluating the MIS UT2 cartridges in an Epson 1280.  I 
have both the Eboni (matte) and Photo (glossy) black cartridges.  I 
started with the Eboni cartridge, then pulled it and substituted the 
Photo black one, which I have been using for a few days.

My question is: Is it OK to now re-use the Eboni cartridge, or am I 
likely to clog something?  I put a piece of tape over the bottom 
opening of it when I removed it.

Also - one more question: I have a C86 that I have been using the EZ 
cartridges in as well.  (I did this to decide if I liked the results 
enough to look for a 1280.)  I pulled the Epson color carts with a 
few prints on them to install the MIS ones.  I did not tape the 
bottom of the cartridges, though, I just put them in Ziplock 
baggies.  (Probably not the best thing to do.)  Should I now toss 
these (ouch) or should I try re-installing them?

Thank you in advance,
Eric