The 18650 I have is from provape. 2000mah about 9 monts old
buy a new one.
Already posted but the older 18650 2000 mah are a few mm's longer. They standardized all the 18650 sizes sometime last year, so you probably have old stock.
I have one that sticks out too long too from a year ago. I'm actually denting this battery on the iHy so I might drawer it just to be safe.
All the ones from the last 3 months fit perfectly.