In a large bowl, combine the avocado oil, vinegar, rosemary, thyme, salt, garlic powder, oregano, smoked paprika, cayenne pepper, and black pepper. Stir to combine. Using a sharp knife, score the fat cap of the tri-tip in a crosshatch pattern. Transfer the tri-tip to the bowl and massage with the marinade to coat. Cover and refrigerate for 1 to 4 hours.
30 minutes before cooking, remove the tri-tip from the fridge and let it come to room temperature. Preheat the Traeger Grill to 500F.
Transfer the tri-tip to the bottom grate of the Traeger, fat side-up, and cook, undisturbed with the grill door closed, until well charred but not burned, around 10 minutes. Flip, baste with the basting sauce and grill the other side, undisturbed with the grill door closed, until charred but not burned, around 10 more minutes.
Transfer the tri-tip to the top rack of the grill, fat side-up, baste with the basting sauce and cook, with the grill door closed, until the thickest part of the tri-tip registers 135F internally for a medium-rare center, or 145F for a medium center, around 15 more minutes. Transfer to a carving board and let rest for 10 minutes before slicing against the grain. Serve with the Salsa Rossa Picante and sides of choice, such as roasted sweet potato and arugula salad.