Thanks for all the good advice, particulary
Loose Rivets - the surgery has been to open up the nasal passages to allow more air in - idea being that it will help the tubes to drain more effectively. Not working though.
I do try saline washes - in fact I have a syringe I use to squirt warm salt water up my nose - it comes down the back of my throat and clears any gunge out but I can't seem to find a way to get it into the ends of my eustachain tubes? I can can occasionally hear the "squelching" you talk about as if it is trying to get in. I have tried hanging upside down while doing it (I wish I could have taken a photograph of myself) but it didn't seem to make much difference. If you could offer a bit of additional advice on technique it would really be appreciated....I can feel the benefits on my nose so I can see how it would help my ears too...
Not seen the device you mention but there is this: it is called a Neti pot
http://www.healingdaily.com/exercise/neti-pot.htm
I have tried this too although I use a plastic container that came with a steam iron I bought - it is designed to top up the iron but does the job!
The Right Stuff - sounds like you are having the same probs as me! Have you tried Nasonex - a steroid nasal spray you can but over the counter - long term use can help. I also inhale steam, take decongestants and also have tried expectorants - they thin the mucus so may help it drain a little. Also tried cutting out dairy which can help in some people and might have helped a little in me. You need to be careful with the medication though - the CAA frown on a lot of stuff so better check. Feel free to PM me if you like....