Thanks for this....
as soon as I get a few free minutes and my phone charged, I'll snap a pic or two.
In the meantime..... see your first pic here?
The hole for the allen wrench? How it has the 6 points, it's not a smooth round hole?
Mine is a smooth round hole. There is nothing for the allen wrench to catch on to to take the button apart.
I had managed to get my button apart, can't say how. I was attempting to unscrew the knurled part and the entire button assembly just sort of "fell apart". I was then able to separate the individual pieces, and I also was able to get it back together.
I have since managed to slightly tighten up the middle some, but it's still loose.
(by the middle, I mean the very center two pieces in your first image)
Could you take some pictures of the buttom?
This is how the button comes originally and how to take it appart: