How often do I need to clear out these endpoints to make sure that I keep getting push notifications?
Yep, that would work. But if you check and have 12 MEP and 15 EP, the trick is finding out which three EPs need to go. If you open each MEP and record the Cookie reference (only need the first 3-4 characters) and then cross reference the EPs, you can surgically remove the dead wood. With this method I have gone two weeks (or longer) with no MEP/EP imbalance, provided I didn't need to power off or soft reset. And that included adding/removing push apps. Some apps do (or did) have issues that create Xtra EPs, but the soft resets are the real killer. That pre-NoDo Marketplace bug did not help live tiles one bit.I had 30 endpoints endpoints, and about 12 managed enpoints. I erased them all, then push started working again. Cool, I'll check every few days to see if anything need to be deleted.