Words of wisdom? Make sure it's all assembled as well as possible. Everything tight, extrusions up against plastic bits tightly, etc. Get your sliders / endstops set to the same height as close as possible before you ever start calibrating. I'm still chasing a few issues, and will be testing some new bits in the next week or two, so I'll post some updates. A new design for a heated bed, an LCD controller, etc....

And yeah, that's a U2 in the background. On the same table is an older i3 ( https://www.flickr.com/photos/jabell...57633957218115 ) and a modded Rep1XL ( https://www.flickr.com/photos/jabell...57631867590921 )