Yup, you have to
unscrew the case, remove the bottle from the optic, and replace it with a different vintage.
(
Lethe is carrying a spade. SPANG.,
Sat 22 Nov 2003, 12:55,
archived)
Ooh,
good one. I was trying to be slightly fluffy, then gave up
(
Ellis,
Sat 22 Nov 2003, 12:56,
archived)