This is a remix of the popular Anet A8 E3D V6 carriage. I added a mount for an 18mm autoleveling sensor. Also i added inserts for m3 nuts to secure the cap even better. This will not wear out over time. The cap now has a tiny gap between it and the carriage. This way it can press against the e3d v6 even stronger which secures it better. There is no movement anymore.
Offsets: (Anet A8)
#define X_PROBE_OFFSET_FROM_EXTRUDER 30 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 8 // Y offset: -front +behind [the nozzle]
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0 // Z offset: -below +above [the nozzle]
#define X_MIN_POS -10
// Set the boundaries for probing (where the probe can reach).
#define LEFT_PROBE_BED_POSITION 20
#define RIGHT_PROBE_BED_POSITION 190
#define FRONT_PROBE_BED_POSITION 20
#define BACK_PROBE_BED_POSITION 190
With these boundaries mine hits the x endstop when it probes the left points so it is really close to hitting the plastik on the side. If you are not comfortable with this change the left probe bed position to a higher value.