Place meat on a baking sheet, brush with the olive oil and rub the seasoning well into the racks of ribs. Cover and leave in the refrigerator overnight.
Preheat your wood pellet smoker to 250 °F and when it has reached temperature place the ribs directly on the grill. Cook for three hours.
Remove the racks of ribs and place them on a sheet of heavy-duty aluminum foil, bone side down. Wrap tightly with the foil.
Return the ribs to the grill and cook for a further two hours.
Remove the racks of ribs again and remove the foil. Turn up the heat to 325 °F and cook the ribs for a further hour.
Check the internal temperature is over 190 °F, then remove the meat and let it rest for 10 minutes before serving.