<nod> fair enough
btw... to all concerned...
The valsalva can really mess you up. I'd been using for years. I eventually had a load of ENT trouble. When I went to see 'the man' and described my history he tutted a lot. Basically forcing pressurised air around those tubes and cavities is not recommended. Since I had festering puss emerging from my tear ducts I was forced to concede he might have a point!
pb