The message . com
from "Skylark" contains these words:

It sounds a lot like the retaining ring that holds the seal to either
the drum or the porthole. Personally I'd pull the machine out and tip it
up and investigate.

Forgive me, but what good will tipping it up do? Is the access to the
door or drum from the back? (Difficult to do unless absoutely
necessary, in which case will ask friend to help.)

Actually, the more I think about it, the less I think it can be the seal
retaining strap. They're outside the rubber, not inside.

--
Skipweasel
Pay no attention to that man behind the curtain.