Ender 5 S1 z-axis binding.

I've cleaned the lead screw and tightened/loosened all the screws. not sure if I did it right but I tried. I have tried many different bed temps and nozzle temps. I am still getting a mild elephant foot. I had help figuring out my first layer and I got that working but still no fix for the binding. the elephant foot goes up to just under the x in the calibration cube. Does anyone have suggestions on what I can try next? I was thinking of maybe getting another z-axis so there are two but I don't know if that is even possible.

https://preview.redd.it/1mm886qwzv4a1.png?width=3072&format=png&auto=webp&s=0762845f4e352a94c583198b42b20713de7d1e78

https://preview.redd.it/a0v2uvyrzv4a1.png?width=640&format=png&auto=webp&s=5f90402f7cafa836cb946d0fe48279cbba1ca726