Finding TE "membrane" style compensators?

I have a Winter combination Airspeed/Vario/Speed-To-Fly instrument that was
designed to use a TE compensator between the capacity line & the pitot line.
My assumption is this was a standard type of device prior to the common use
of TE probes. Talking to some experienced members of my club confirmed this
and they described it as an inline filter that had a membrane that would
compensate for changes in pitot pressure to the capacity flask.

Unfortunately, one of the previous owners of my glider misplaced or lost the
compensator and now that I'm redoing the plumbing, I want to have it
installed correctly per the manufacturer's suggestion.

Does anyone have these or make these anymore? A google search didn't turn
up much, and I don't see anything like this on Wings&Wheels or the other
common soaring product sites.

Any help would be appreciated,

Thanks!

Paul Adriance