A little “scotch tape” can be used to hold the various cables out of the way. Then the replacement board almost falls into place.
Correction. The two boards are NOT compatible. The battery connector and others do not align. A faulty 2.3 GHz logic board is no excuse to get a faster board.
At this point, it should be noted that the author is using two different logic boards through the procedure. Here, for the first time is the difference between a 2.3 GHz board and the 2.6 GHz board. The audio out socket is integral to the 2.3 GHz board. The 2.6 GHz board has a discrete audio out jack that plugs into the logic board. As the disassembly proceeds, the 2.6 board’s audio outlet is unplugged (Step 26/27 pictures note this, but the author doesn’t. So, as I hoped, the 2.3 GHz board can be replaced by a 2.6 GHz board, IF you don’t want an audio out jack!