I noticed a problem with my new Photon - there was a lot of excessive play with the lead screw nut ( which is not a Anti Backlash? standard from the Factory ) i spent almost 4 days with Support and eventually there sending a New Nut - as I didn't want to wait and will probably upgrade the factory nut to something better I designed & printed a temporary nut for the top on my FDM Printer first and then printed this one using the scad program files I changed on the photon - It has transformed my prints and I will be doing this for my other Photon - I would check your lead screw movement - put the build plate to Home and hold the top of the lead screw and see if you have movement if you haven't you wont need to fit this.
Here is the link I used for the Thingiverse Files I used : -
Thanks to Corona688
I just removed two of the original M3 screws and replaced them with longer ones.
P.s Check out my Other Photon Mods