Drum Insulation falling apart?

Howdy:

I have, in the past, had an issue with what I assume is the insulation between the drum and the roaster’s body. It appears that some of the insulation has fallen apart a little bit. I actually had some of it fall into some of my coffee once. I assume this happened by my having beans fall through that slot between the drum and the glass and then rubbing up against it. I haven’t had this happen recently as I’ve begun vacuuming that space between each roast.

I thought about responding below, but I’ve had an issue with the insulation and not just a curiosity…

At any rate, I’m wondering if I need to think about replacing the insulation? Any thoughts?

David