I just got a Matrix 6R and want to control it with an Akai EWI4000s.
I can program breath controlled patches on the DSI Evolver (which
supports breath on the front panel) and know the 6R can do it since
there's a bank of 100 for sale at $50. I assigned Lever 2 to 2 (on
the assumption that that represents CC#2 - breath) and matrixed that
to VCA 1 volume but that didn't seem to work.

Does anyone know where any breath-controlled patches are (the one link
I found was broken), or have any quick tips on what I'm trying to
accomplish

Thanks,
Rik