I had the right idea on my first attempt, but missed an obvious feature of the level that caused me to be 2-off. After exhausting other options I realized what I had missed, and found the solution. Taught me to look closely at the levels I do.
This is one of those solutions that makes so much sense once you see it, but it took me forever to get past the 4- and 6-offs to figure it out. Very neat though.