Norwalk police are questioning the story provided by a man who showed up at the hospital with a gunshot wound.  The man claims he was hit in the leg during a drive-by shooting at the Roodner Court Housing Complex around 12:30pm Thursday, but police there's no evidence at the scene supporting the claim.  Residents in the area also deny hearing any gunshots at the time.  According to police, the man's story also kept changing as he provided them with details of the incident.