I think I know why it's so damned sticky. It's the hook shapes! It's like a barrel of monkeys, or velcro hook-and-loop. The molecules latch onto each other without bonding, and with 3-dimensional space they fold in on each other. It'll flow, but it takes heat, because heat is motion and can get things to unlatch...and find new latches.

Solution created in f43's circle, and in the OM cloning tubes, with extra touches in fazzone's tool. It hasn't touched the game proper; it was programmed exclusively via external tools. Apparently that was never meant to happen? I think it's a better cycles solve than area solve, but it's decent enough both ways, so I says, says I.