Is that metal rod in the top floor still needed in the hole safe? Maybe Mr. Stick could remove it and utilize it for the other holes that he has discovered. Hopefully nothing bad happens.
Mr. Stick goes to wall cache and takes rod from the hole.
*beep*

Green button turns to red again, nothing else seems to happen.

Yep. Nothing bad. And shaft is still open.
Mr. Stick climbs down and stops next to hole in shaft.

This hole is different, it is wider and smaller in lenght, metal rod can't be inserted in the same way. Perhaps this hole is used for some different purpose.
Mr. Stick goes down to bottom room, then goes to the hole formerly hidden behind the box, and tries to insert metal rod inside.

It fits perfectly.
But mr.Stick doesn't hear any sound or see any difference. Do you?