They say getting 80% of the work done takes just 20% effort, but the last 20% takes 80% more effort.
I disagree, it actually feels more like another thousand percent! I've been printing all sorts of test parts in order to tune firmware settings.
This is a pic taken of a print, the first time I've maxed out the Z axis, printing a sample model downloaded from the British Museum. Maxing out Z means 382mm. I hope to get this number to a nice 400mm. This was also quality test after all my tweaks and it is stunning.
So after all, Chinese parts turned out to be great and very worth the 3 week delivery time.