RiverNorthPhotographyRed Robin Gourmet Burgers, Inc. (NASDAQ:RRGB) reported the company’s Q1 results in late May, not showing signs of improvements yet as the weak earnings have carried on. The company hinted at a more positive start to Q2, though, which could improve the investment case considerably. On the other hand, with the weak performance and high debt, the improvement is very critical and continued weakness could pose a real threat to the business’ ability to continue operating. I previously wro ...