Adjustable Z-Endstop - Anet A2

Using Freddy_Fox's design, I had to adjust the mountings to accommodate my setup that uses a custom version of Olev's Single Stepper Dual Z setup. I needed to move the set screw mounting to another location on the ZX-axis Gantry. I decided on mounting the set screw holder on the inside of Z screw since it did not interfere with the X carriage. The relay holder also had to be extended in two directions to align properly with the set screw. I applied heat to the M5 nut to secure it into set sc