Prepare chilies: Cut ancho, guajillo and arbol chilis and remove the seeds/stems. Add 1 1/2 cups of water to a saucepan, add chilis, and bring to a boil. Take off heat, cover, and let stand for 15 minutes. Pour chili and water into a food processor and blend into a paste. Set aside.
Sprinkle ~2 tsp salt and ~1 tsp black pepper on both sides of all beef cubes.
Add vegetable oil to a large Dutch oven or pot. Set on medium high heat. Once oil is heated (a few minutes), lightly brown beef in oil, then remove from dutch oven (including liquid).
Brown the onion and garlic in oil until fragrant (or for 1-2 minutes). Avoid burning.
Add chili paste, ground cumin, Mexican oregano, smoked paprika, and cayenne. Stir thoroughly.
Add crushed tomatoes, return beef to Dutch oven, and add beef bouillon. Stir and bring to a boil.
Lower meat to medium low. Cover and cook on low medium heat for 4 hours or until meat is tender.
Remove 1 1/2 cups of liquid from chili and place in a separate bowl. Slowly mix Masa harina into the separate bowl until thick, but not clumpy. A few tbsp of water may be added to avoid clumps.
Return the masa/water mixture to the chili and stir thoroughly.
Add granulated sugar and 1-2 tsp salt (or to taste) to chili and stir. If the chili is still too bitter, add more sugar and salt to balance out the flavors.
Serve and enjoy!