Took forever. Not Particularly fun but only solved it by deconstructing my routes from the other 2 of the series and eliminating what worked there so it couldn't work here.
Brutal one for me.
These 2x3 space levels are absolutely a headache to me.
In my case when I got the 2 off, it was pretty close already - changing order of doing things helped.
Solved it pretty quick because of playing the original first, but the 310 is definitely subtle. I like this version more than the original, the updated areas add more close possibilities to this layout.
Insights