[azapa]

Thanks Roland. You know I was thinking about EQ as a cause. I would imagine the opposite of what you said to happen. IE. the LESS air I pump in on the way down, the LESS there is to come out on the way up? In other words, maybe a little "stretching" of the ears is not a bad thing to put up with on these shallower, higher pressure change dives? Possibly, being used to deeper dives (3 to 4 eq's to 15m) , I had "over equalized" on these shallower immersions and something pinched shut on the way up at just the wrong time?

Ideas only...

Cheers