Well, I actually have some pics from one of my puzzle friends out there who bought a castNEWS puzzle at a local puzzle shop, and discovered that -- after viewing the above theory -- was missing two pins on one of the pieces.
He found that not all castNEWS puzzles are created equal . . . . .
He thought something may have broken off inside the puzzle, so before he took the puzzle apart, he again searched this webpage hoping to find more information on the construction of the puzzle . He carefully viewed the theory presented by Steve, (another puzzle friend with a theory of his own, as stated above) who was right in stating that there is something inside that stops the larger pins from fully retracting when the other side is up.
This ultimately gave him the confident initiative to go ahead and pry up one of the end caps to see if he could fix it, but there were no pins to be found on that one piece ( East / West )! He figured -- after viewing the actual pics I had with all four pins showing -- that it must have been a faulty puzzle that somehow had sneaked by quality control.
In fact, there is a ball at the very end of the track, as presented in the pic below:
Hopefully my friend can get another castNEWS puzzle from his local puzzle shop at no extra cost to him.
There are four 'main' pins (two to each piece) to deal with . The solution to this puzzle is 'almost' the same as all those that require centrifugal force . However, there is one added 90° pivot step that separates this puzzle from all the rest .
Note: as the puzzle sits in front of you, be acknowledged that the bottom piece is automatically in the 'unlocked' position, and the top piece is in the 'locked' position, according to the schematics you have seen above . Remember: the locked and unlocked positions mentioned above only refers to the positions of the smaller 'stop' pins .
STEP 1 : give the puzzle a good spin on a flat surface -- it doesn't matter which way the rotation has to be, whichever way gains the most out of the spin . This will completely recess the two 'main' pins on the bottom piece (E W).
Again give the puzzle a good spin . This second spin will free the locked 'main' pins in the new bottom piece . At this point, you should be able to lift one piece away from the other .
Note: . . . . . sometimes another one or two spins will be required .
Notice the orientation of the letters after the flip . . .
North & South letters are now horizontal