Digital BW, The Print

Has anybody had trouble with the Cone K7 carts for a 2400?  First off
mine don't fit.  The cartridge cover won't snap shut.  The carts seem
to click in and go through the charging process but then on the first
nozzle check I get serious gaps and large blotches of ink on either
side.  Now the paper and ink buttons are flashing and the carts are
locked over to the right and can't be moved.  All I want to do now is
get the carts out and go back to the Epson carts.  It's really
upsetting as these aren't cheap at all.  I've written to them and
asked to return them.  It's just not worth the hassle.

Tom Husband