| One thing to consider is the valsalva manouvre - try to avoid this and equalise by swallowing with the tongue at the top of the mouth. Valsalva causes shunts!!
PS swallowing too much air is bad as well BTW....
Hope you get it all sorted soon.
Chris
__________________
"It is better to buy a Reliant Robin and be thought a wanker than to buy a four wheel drive and remove all doubt"
Mark Twain |