Recently our 1624 is just very loud when it's printing. I've done the maintenance - cleaned and greased the carriage the head slides on - still loud. Is there anyone who troubleshoots this stuff? I'd hate to just start buying and replacing parts without knowing if they'll solve the issue. I reached out to someone at Mutoh and they say since my printer is more than 5 years old, it's out of warranty and so they didn't help me.