Concerns that rising gas prices will benefit the fast food sector at the expense of the casual dining sector led one analyst to remove The Cheesecake Factory from her top restaurant stock picks. Ashley R. Woodruff, an analyst at Friedman billings Ramsey noted that soft sales in May were likely to portend a weaker summer season for casual dining chains than for fast food operators. Cheesecake shares dipped some in premarket trading but soon recovered.