Cut roast into 6 portions while removing any large pieces of fat. Heat 1 Tbsp vegetable oil in a skillet.
Dab roast dry with paper towels, season with salt and pepper (about 1 tsp salt 3/4 tsp pepper). Add 3 pieces to skillet and sear until browned on all sides. Transfer to a slow cooker.
Add remaining 1 Tbsp vegetable oil to skillet and repeat process with remaining 3 roast pieces. Nestle beef portions side by side in an even layer in slow cooker.
In a 2 cup liquid measuring cup or in a bowl, whisk together remaining beef broth with chipotle mixture, cumin, oregano and cloves. Pour mixture over beef in slow cooker, then nestle bay leaves between beef portions.
Cover and cook on low heat 8 - 9 hours**.