[TR] Plastic lens inside

[TR3driver at ca.rr.com (Randall)]

> Has 
> anyone found a good replacement for this lens?  

The sparkling water I buy comes in plastic bottles with straight sides and
rather heavier plastic than the usual drinking water.  I cut a section of
that, which seems to be working well.

Probably there is some soft drink that comes in a similar bottle.

-- Randall