as with most of the creality printers, it was printing much better and cleaner. I changed nothing, a few months later it doesn't print as well. Always chasing ghosts in the machines
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https://www.youtube.com/watch?v=a3JvliWBzq0
I'd much rather post actual builds. but everyone asked for a better view of this one. youtube doesn't allow "how-to" videos for guns. showing the parts doesn't tell you how to make it any more than describing how it work. anyway, hope it helps.
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https://www.youtube.com/watch?v=SuurPB5ugy0