Lighter days (first day, last two or three) everything works perfectly. I change it every 9 hours or so and all is well.
My day and a half of heavy flow is misery--it works for an hour at a time, tops. When I take it out, there is some blood in the cup and the rest is on the outside. It works, though, for an hour. No leaking. And then I can feel the squishy "I am leaking" moment.
Forgetting everything I knew, I started this round using it low, and then, reading this site again, remembered that higher is sometimes better. But nothing, I mean nothing, works on those heavy days. And my heavy days, I could use heavy-flow tampons and never leak, so we're not talking amazingly heavy. And with the other two stints with the keeper between babies, I would get a full cup plus some on release. Now it's a dribble --some in the cup, but NOT FULL --and I'm aggravated.
Is it time for me to retire the keeper for something wider? Keep trying to get the hang of it? Any tips? Thanks.