how old is the captop
when was the encoder strip cleaned last
yes you need that head
when you take pixs do the nozzle test seperate - that is more important than all others
I'm a fool, haha, when cleaning my printer last week, the mist filter was beyond service. I replaced it with a substitute, it was only this morning that I paid some attention to it, and realised it is bulging up in the middle.
This has caused the printheads to be wiped each time when passing the filter, so the cross contamination has been done by this!
I now have a very good print test, and I am only owning up to this mistake so that other users can avoid the same, lesson learned, always use OEM parts :-)