Dave & Buster's is having a tough time getting its groove back.Dave & Buster's (PLAY -3.82%) made headlines this week, and not in a good way. The company's stock dropped more than 17% following the release of a disappointing second-quarter earnings report and a cautious tone from new CEO Tarun Lal. Investors were hoping for signs of a rebound or new energy in the business, but what they got instead were signs of deeper problems and a tough road ahead. Based on the current outlook, it's becoming harder to vi ...