Digital BW, The Print

Jeff,
>  Two things to remember: the more frequently you swap, 
> the more likely you are to introduce air into the printheads, and 
the 
> longer a CFS unit is unused, the more likely it is to develop 
sludge 
> in the lines due to the water/solvent permeability of the tygon 
> tubes.  
>

What are the consequences of getting air inside the print head(s)? A 
blocking of ink flow obviously but would that be a fatal situation 
requiring Epson service?

How does one detect sludging of the feeder line? And how do you 
recommend clearing it?

And as Jerry Olson pointed out the MIS rivets don't provide a 100% 
seal. What do you use?

Thanks very much for your help. 

Don Bryant