I replaced the ink cartridges in my 968 All-In-One printer, and now it won't even print the alignment page properly.  The sound when it is trying to do this is horrendous as the cartridges reach either side of the printer, and the alignment page gets about 3/4 of the way printed before I get the "Printer Carrier Stall" message.  The alignment page that does print is significantly out of alignment, with over an inch of variability on the margins.  When I get the "Printer Carrier Stall" message, there is nothing inside obstructing the printer at all.  I'm not sure where to go from here.  I have taken both ink cartridges out to check for tape or inconsistencies and they appear completely normal from the outside and are absolutely in the right slots.  Any ideas?

Anji