I managed to go straight from a 10-off on a false path to the 128 here - no idea what the 2-off others are referencing is. Very nice level though, fun to figure out.
My thoughts were basically the same as Palm’s. :)
That solution is pretty exceptional. Took me ages to finally be able to see it as an option.
Edit: I just beat this level again now, 11 months later. It didn’t take me nearly as long as the first time, and I didn’t find the solution quite as exceptional as I did originally. Maybe that means I’ve matured as a Pathology player? :) Either way, still a very clever solution, and feels very logical. Good level.