Mix the oil, vinegar, salt, pepper, thyme, and dill together in a large glass dish. Place the pork steaks in the dish and cover. Marinate the meat overnight or for at least six hours.
Remove the steaks from the marinade about 30 minutes before cooking. Place them on a cooking rack over a baking sheet so they can drip dry. Sprinkle the ground cumin, paprika, and a little more black pepper over the surface of each pork steak.
Preheat the grill to a medium heat level while the steaks are resting. Set the grates for a medium height as well, providing indirect heat.
Grill each pork steak for about 5 minutes per side. Cook with the lid closed until the internal temperature is at least 145 degrees F. Remove from the grill and cover to rest, then serve after 5 minutes.
Notes
Trim the fat off of the edges if you like, but it adds to the flavor and can be cut off while eating.