I watched the numbers on a tool go up by two, then take a while, then go up another.... and sometimes even go back down. Here's a video.
https://imgur.com/a/8TUp0gW

They're both randomised and use the same algorithm as living tools; I need to tweak all of them though so there's a bit more sequence.

It's triggering on both sides for some reason but using random values, hence the desync.