I'm trying to put together an Original+ that I just received (mostly consulting the Original+ Assembly pdf, and the wiki assembly instructions at some stages). I can't find the Z drive nut for the heated bed pictured in either the Original+ Assembly pdf or the Heated Bed Assembly pdf, only the squashed tube pictured in the wiki, for which the Original+ kit doesn't seem to have any of the wooden housing parts.
Has the design changed in some way (if so, are up to date instructions available?) or am I simply missing a part (if so, what exactly are the specs of this part, should I be able to acquire a replacement myself or will I have to get it directly from the supplier)?