Hi Mike

I've never used or even seen the NCR balloons - so I can't comment on those -
except -
I'd be careful of applying too much pressure with inflatable balloons - if you
damage anything
around your ethmoid, it is (in general) far harder to repair an expansive trauma
than it is to
correct a compresive one.

My experience is that septal/vomer problems which remain stuck are cause by
something stuck tound
the coccyx or sacrum or other deep midline structures inferior to the umbilicus.
If you address the
tailbone/sacrum, this frees off the faciomaxilliary area some more, then when
that has moved as much
as it can, you again go back to the sacrum/coccyx... repeating the cycle as many
times as it takes.

This is applying CST in a very mechanical "fixit" manner - there are more
subtle, less "fixit" ways
of working on this which are sometimes far more effective. Againm if you have
hit a plateau, I'd
suggest that maybe something more subtle could be what is needed

Andew