Finally cleaned up the cables. Used cat5 cables for the limit switches, colored according to the axis it belongs to.
Moved the switches to the plates.
Grounded the motor cables.
Simplified the z-axis switch holder, and made it stronger.
Went over all the V-wheels and made sure the bearings were mounted the correct way.
Forgot to mention the power supply that I took from a fax machine. Don’t know how many amps it is rated for.