Hi,
I finally managed to open my Isis 1 but just to check I did everything correct I went to re-attempt the orb before writing down the key code :-/
I was very careful when closing but the locking mechanism popped up when it was half a turn from closed leaving the "placentas" at 180 degrees (directly opposite).
Because of this I can no longer re-solve the puzzle as the first part cannot drop down into the 2nd part as it is now 180 degrees away and doesn't line up inside.
Please help!