I used a petg filament and only heated it enough for an pla. My machine started clicking afterwards and won't print. I troubleshooted it to the nozzle being clogged to the point it needs replaced. I purchased new nozzles but I can't for the life of me figure out how to get to the nozzle without taking the hotend off. Chatgpt gave me a walk through but I don't think it applies to my tina2plus. Has anyone switched a nozzle on one?