u/Far-Public60

Okay I've had this Canon Pixma G620 for a while now and it worked very well but it's suddenly started printing white lines on everything. I've done a few nozzle checks and an ink flush, cleaning, changed print heads, head alingment etc. etc. and nothing seems to be helping. The thing is nothing shows on my nozzle checks and head alignment sheets as off. When I change to high quality printing, instead the print overlaps on itself and I just have no idea what the issue could be at this point as was wondering if anyone knew/ had similar problems before.