I found installing the cart a little finicky. It was odd how you put it in and then had to lift the cart to lock it into place. If this doesn't help, have others try it.
I inserted a new Print Cartridge into my machine, but could not get the Alignment to function. I removed the new cartridge but when I attempted to re-install the old one for testing it would not go in, then I found the new one would not now slot in either.
I cannot see with the naked eye what is going on in the space for the cartridge, but if there was a fault in there would it have caused the mis-alignment.
Any assistance on both problems appreciated.