Just a quick question:
I passed out and fell on my Mbot cube. 
Surprisingly, the printer appears to be undamaged apart from the Z axis lead screw which has small dent.
I’m now getting layer separation at that point so I need to buy a replacement.
I’ve searched everywhere but cannot find the spec for it. I’m pretty sure it’s an M8 and it’s 348 mm in length but need to know if it’s single start or multiple start and the pitch.
If someone could tell me so I know which one to buy, I would be most grateful.
