Digital BW, The Print

This weekend I tried refilling my UT-2 cartridges for the first time 
(they came already filled, I subsequently bought the 4 oz bottles and 
the syringes).

My first comment is that I made a big mess. I underestimated how far the 
ink would squirt out of the top vent if I overfilled (which I did on 4 
out of 5 tries). Both of my hands were covered in black ink when it was 
all said and done, but it washed off with soap and water.

It took me 2 sets of cleaning cycles of 3 cleanings each to get clean 
nozzle checks.  I'm still having trouble getting a good nozzle check out 
of the "light magenta" position (after 36 hours of "rest"). I'm pretty 
sure it's caused by air in the ink chamber.

If I wait long enough, will this problem go away (ie, will the air work 
its way out)? or should I just pop out the cartridge and try refilling 
again (after extracting the ink and foam out of the cartridge first).

Thanks,

Mike