Changes in clover kext info.plist don't have any effect

I'm following this guide to install macOS High Sierra on my ThinkPad T420 (i5 2520m, Intel HD 3000, 8 GB RAM, 256 GB mSATA SSD)

https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/?page=20&tab=comments#comment-1952283

I got it installed and it's working pretty much perfectly. However I would like to change a few values in the VoodooPS2 kexts to make the touch pad more sensitive (the FingerZ value). These are located in EFI/CLOVER/kexts/Other/ on disk0s1. There's also a couple other files that have this value in them, I changed all of them.

However none of them make any difference in touch pad sensitivity. I've also looked in /L/E/ and /S/L/E/, these kexts are not present there (as far as I can tell the macOS install is completely vanilla except for the EFI partition).

I've tried clearing my kext cache with sudo kextcache -i / which had no effect either.

I'm fairly new to how things work on macOS and Clover, so I'm probably missing something obvious.

Can someone point me into the right direction?

Thanks.