Digital BW, The Print

> The second fill, I used a straight pin 
> to help remove the plugs. This procedure had been mentioned by a 
> couple posters here. But I saw a problem with that. The pin can go 
> right into the plug, into the hollow center of the plug, thus 
> creating an air channel, and possible leaks. I feel it was a learning 
> error, and I could probably carefully use the pin without it piercing 
> into the hollow portion of the plug. But still I ordered 10 extra 
> plugs the other day, and will learn to refine the procedure.
MIS supply 2 types of plug (at least) one is a solid cylinder with a
small bump at one end, these go flush into the cart when fitted.  The
pin trick is appopriate for these.  The other design is T-shaped or
hat shaped: there is a hollow cylinder, that goes into the cart, plus
a cap that is larger than the  hole in the cart. The pin trick is not
appropriate and should not be needed for these - lift the cap part and
pull.  

I suspect the main problem is quality control of the holes drilled in
the tops of the carts (some are definitely too large to give a tight
fit).  

Perhaps some printers are more susceptible to leaks - mine were all
very old.  I had ink leaking around the cartridge nozzles on the
printhead (and probably also through the printhead, but it was hard to
tell).

Ken