Flank Steak Marinade

This is my favorite marinade. My Mom is famous for this marinade, it is often requested for that special dinner. So I decided to Paleo-fy the recipe.
Asian Marinade for Flank Steak
Flank steak (average size, thawed)
12oz Tamari sauce (like soy sauce, but gluten-free, seriously it tastes the same as soy sauce to me)
1/4 c Honey
2 Tbsp Sesame seeds
1 tsp Sesame Oil

(In the above picture I did not warm the tamari and incorporate the honey so I am recommending that for the recipe below.)
Gently warm the tamari and honey on the stove top in a pan. Just enough to melt the honey. Do not boil or over heat. Cool. Score the steak in a crisscross fashion to help the marinade penetrate and out in a 13x9 baking pan.  Pour the mixture over the steak. Sprinkle Sesame seeds and sesame oil on steak. Let marinate for 2-4 hours. Then cook on the grill for best results. On medium heat for about 7-10 minutes on each side depending on thickness. The ends are generally well done and the center cuts are medium rare. Don't over cook it. Important: Cut the meat across the grain so that the pieces are about an 1/4 inch think and 6-8inches long. Everyone loved it. This is a wonderful thing to serve guests.