AKG D1000e missing capsule foam, is it replaceable?

[WhinyLittleRunt]

I've had a D1000e for a while now that the capsule shakes around because the foam deteriorated and my guess is the previous owner scraped out whatever was in there. What kind of foam could I use to replicate what was originally in there? I'd put any old foam in there but I don't want to create vibrations or anything by using the wrong stuff...

EDIT: Nevermind, I found some soft foam that did the trick. Overthought it