monoprice select / wanhao i3 fixed bed calibration

I really don't like the springs that this printer comes with, doesn't seem stable and my machine was always going out of calibration. There are caps on thingiverse that are supposed to make them more stable but they still lean. So what I did was got some 4-40 screws (I know this comes with metric but american thread is easier to acquire in the states), and mounted them the same way as the existing ones (screw down, nut underneath). Now press some 4-40 nuts into this knockoff (which are larger