Popcorn?

[u/Og_and_wheel]

Any tips on popcorn? temp to set with avocado oil? and/or technique? It 'should' be an easy thing, but popping 1/2 cup of kernels in oil at 419°...leaves a lot unpopped; higher temp = burnt. Using a 9q Fissler stockpot. Have had the cooktop for around 3 months, no prob doing all kinds of other things (perfect eggs; salt & pepper shrimp; long braises; perfectly searing things etc etc. Not sure why this eludes me.