Digital BW, The Print

While I've had all kinds of problems 
printing, this is a new one: I had been 
getting nice neutral B&Ws with my Epson 
2200/MIS Pro color inkset/Cathy's 
Profile/Photoshop6, when, after a few days 
lay-off, the same setup started giving me 
beautiful, uniformly *mint green*, toned 
prints; from Grayscale and RGB  files.

The setup was exactly as it was for making 
the profile and this is not the usual Epson 
green/magenta crossover problem, there is no 
magenta and the shade of green is different.

I checked the setup today and made some 
changes, printing test strips from Gray and 
RGB mode with different Gray color spaces 
assigned; I renamed the old profile and 
reinstalled the original. None of this had 
any effect.

I thought that it might be the new batch of 
Moab Kayenta, but I printed on the back of an 
old sheet that had a properly neutral image 
on it already - same thing. (Kayenta is 
coated for double sided printing.)

Of course, the first thing I did was a nozzle 
check/clean cycle and purge until I got a 
perfect nozzle check. I had not changed or 
added to the ink reservoirs between the good 
and the green prints.

Do profiles go sour? Past the "sell-by" date? 
Of course I'm kidding, but what should I look 
for next?

Frank