RecruitingDevice studyREvision of VSG with Ablation of the Mucosa ProcedureThe purpose of this study is to evaluate the feasibility, safety, and tolerability of endoscopic selective gastric mucosal ablation (GMA) using argon plasma coagulation after sleeve gastrectomy. In this study, GMA will be performed on patients who have experienced weight regain following an initial successful response to sleeve gastrectomy.