RepRap Wallace Build

making a Rep Rap Wallace with 5 Nema 17 motors, MKS1.0 MB and Titan extruder,HTF-2013 Drivers this unit is so bare bones its got nowhere to put the Board and Fan to keep it cool…
my major problem to date is Z binding problems then they start to humm and Over heat… I think it might be a motor connection Issue but I am not sure… driver is currently at 0.861VDC and it is still Jamming the 8mm threaded rods are not crooked or Dry… and I reduced the Nuts to one Nut at the top…

If i look at https://reprap.org/wiki/Wallace
the z rods should be connected…

yup they should just not done… was trying to get the base square first…