Step by step, inch by inch, I am going to make that one piece slightly clearer. This has mostly been achieved by reducing the focus on its partner. I think it will be prudent to interview players after they've finished to determine if I should do anything else.

There's one move that I've always been concerned about, and which appears to be more obscure than I wanted it to be. Ugh, I would prefer to have something else where it is, but I really can't without inducing a much worse solution. If I make it more obvious, it quickly becomes contrived, but it's really hard to make it clearer without adding a blatant arrow or something. Urgh...
In any case, I altered some geometry that might subtly make players question a certain geometry decision and hopefully move them in the right direction.

Fixed a small spot of nodraw. Updated entry corridor to be consistent with other Zone maps. Moved some geometry slightly to provide a little more clarity on what should/shouldn't be possible to execute while solving.