24 Hr soak regardless of when or if seed sinks. Moist paper towel in a sealed misted ziplock bag. Tap root within 48hrs. I've had 3 seeds over 4 years not pop. One was 2 out of the 3 they sent 3 more everything worked out fine.
I germinate in a dark cool closet
I lied I had 4 not pop but after a week in ziplock I threw it in a outdoor planter kept it moist when I watered other plants it finally sprouted 2wks later