Mediators trying to write new a management plan for Voyageurs National Park have again found themselves stuck on an old issue: the use of snowmobiles within the Park. Minnesota Public Radio's Bob Kelleher reports from Duluth: After meeting for months and finding solutions to dozens of management questions, the 12 active members of the Voyageurs Mediation panel have found themselves split over the single most contentious surrounding use of the park: snowmobiling on the park's largest land area, the Kabetogama Peninsula. Mediators agreed in January that the snow machines should be allowed on the peninsula's chain-of-lakes trail, but they parted over a proposal to limit