Digital BW, The Print

Hello Group..

  Yes..I know I've been a STRONG proponent of the MIS SPONGELESS 
carts for use in a 1280..BUT..I guess now it's MY turn to come to the 
group with a problem I'm having..I'm using MIS UT2 Inks in these 
refillable carts..No problems after 5-6 refills (and 5 months of 
use)..that is until NOW!
  I haven't been able to get a decent nozzle check since my last 
fill..I've done all the usual cleaning/purge cycles/patterns plus 
Windex on the parking pad and Windex on the paper-towel-in-the-tray-
cleaning..And gues what..VERY little seemed to be coming out of the 
C, M and K ports..BECAUSE..They NOW have NO INK left in those 
chambers!..Where and Why did the ink go??..(I think I know where!)
  I've replaced these carts with OEM original color dye carts and now 
have the worst clogs ever....I'm doing the parking pad soak again 
along with the in-the-trough cleaning..Still can't even get these 
dyes to print..I've faxed a copy of my nozzle check sheet to MIS, but 
I'm sure I will not hear back from them on a Sunday during a holiday 
weekend..
  Has anyone had a similar problem to mine?..How about a "FIX"?

TIA and Happy holidays to all..

Eddie Wiseman