In the bottom of a large bowl, whisk together mayonnaise, sour cream, the juice of two limes and the chipotle pepper. Season to taste with salt and black pepper. Add drained pasta, corn kernels, cheese, green onions and cilantro; toss to combine. Cover and chill at least 1 hour. Before serving, toss salad and taste for seasoning, adding extra lime juice, salt or pepper. Serve garnished with extra cheese.