... yep, that old chestnut,,, valves falling off,,, a long gone problem thank the gods.
Living/kiting in a place that is lucky to get below 30 degrees C (with high humidity too I might add), we haven't had problems with pealing valves on the Norths since 2011!
Having said that, we've had other brands failing, not as epidemic as the pre 2010 North's though but no one brand seems immune!
Robbie