A Cook County jury’s not-guilty finding for a south suburban roller rink will stand after a state appeals panel on Wednesday found no issue with the instructions it used to reach its verdict.In March 2016, since-retired Cook County judge Thomas Flanagan ordered a new trial in plaintiff Marie Largen’s negligence case against the Tinley Park Roller Rink, citing a potentially confusing Illinois Pattern Instruction 60.01 that quoted the entire Roller Skating Rink Safety Act and may have thrown jurors off during …