Hi Rick, Yep it does indeed, why I have always thought that between air and output in the bag  it slowed us passing more and then when emptied the Q behind rushed in. Not that’s only my thought 🤔 Am sure Eric or the others will know 😀

LOL. Yes, and it becomes a bit of an ordeal when I wake up at 5am to go on an all-day bike ride only to have to empty my bag 3x before I leave. 🤣

I'm sure there are a few reasons why this happens, and John could be right about air/output slowing things down. I know when I have ballooning, emptying the bag of air does cause output to suddenly want to come out, too.