Hey all,
I’m in the process of building my plotter. I have a piece I’d like to build but I can’t make my mind up about where the black piece should screw into the board. Would it be the first line of holes or the second?
Any help would be greatly appreciated. 
iirc it’s the second line, the one the green line goes through in your pic.
I do remember being quite orientationally challenged at several points during the build and had to unscrew and retry a couple times to get it right so (1) take my advice with a grain of salt and (2) it’s ok to disassemble and reassemble as part of the process.
