Not Tina's Cuban Sandwich

Serves 6 6 Portuguese rolls, split and left together 1/2 cup mayonnaise 3 tablespoons lime juice, divided 1 teaspoon hot pepper sauce 1 red onion, halved and sliced thin 2 tablespoons rice vinegar Salt and ground black pepper 1 1/2 pounds thin-sliced boneless pork loin 1 tablespoon olive oil 1 teaspoon each: garlic powder, cumin,...