Reply to S4 Jog Wheel pops right off

The left jogwheel has an issue: the grooved top pops right off as if it was not fastened. I do not want to break anything but want to see if anyone has an idea how the is supposed to be fastened.

Here is a pict of it here.

It looks like you should line it up with the plastic catches on the inside of the jog wheel with the same catches on the grooved top and then turn it until it snaps. I just want to make sure that is the way it works before I make a bad snap

Anybody every took off or put on the grooved top onto their jog wheel?