Everything is 4-off...
However, every incorrect path gave me the distinct feeling that it couldn't be right, and the solution itself wasn't very fulfilling.
I have big fun working this level through. Have just found a 2 off. The real challenge is starting for me... :D
2 tries later, I got it! Great one really.
Interesting level. Really messy, I feel like there’s a lot here that doesn’t really add to the level. But the solution is pretty neat at least, once you know where to look for it. Was stuck 2-off for a while my first time trying it, and then eventually found the cut.