There are pegs for the microswitch to sit on, but I found them to be a little delicate so I just added some glue to the switch.

Use m3x45mm screws to replace the existing 40mm countersunk ones.

STEP file included

Supports necessary

Gcode I used for prusaslicer after layer change:

;AFTER_LAYER_CHANGE

G1 F9000 X5 Y215
G1 F1000 X0
G4 P700
G1 F9000 X5

;{layer_z}