i wanted to remix this so that i could give it flexibility and to keep the sensor in position.
all you need to do is unscrew the two m3 bolts holding the lead screw, slide in and screw back on, you may need longer m3 bolts, i would advise to print at 100% as this will be a moving and working part so you would like it to be as strong as possible.
reuse the bolts from the z endstop to screw the sensor into position.
always check that the sensor is in its proper position and that it has enough tension on the filament to activate it.
i may in the future add a dust filter to this to make it a 3 in 1 model, so it would have the capability of being a guide, sensor and dust filter.
THIS IS MY FIRST ITERATION OF THIS MODEL, I WILL IMPROVE UPON IT ONCE I USE IT FOR A WHILE AND SEE WHAT CAN BE IMPROVED.