Just spent a bunch of hours troubleshooting a printhead (MK/R) rejection issue on a Z3200. I eventually found (after the customer ordered new MK/R printheads) that the MK/R printheads are different between the Z3100 and Z3200! WHY!??!?!?!?!?! Z3100 = HP 70 MK/R. Z3200 = HP 73. WHY!?!!???!?!?!

Is there THAT much of a difference?