"Royston Vasey" fired this volley in
. au:

Yeah, I toyed with that idea - like some of the old piston ring
compressor sleeves for auto engines. The open end needs to be squeezed
a little smaller than 16mm OD but the flat top end OD is fixed at 16mm
and wouldn't fit through.

Sure it will Roy...

Make the "sleeve" out of multiple petals of thin sheet stock. Push the
screen home, then slide out the shims one at a time.

LLoyd