Recently, winter has hit hard in Madison, WI. Temperatures range from 5-35 degrees, and we´ve even got about 6 inches of snow. Since it has gotten cold, I seem to have lost the ability to open my seat. My key still fits in the hole and I can start my moped as well as lock my wheel, but I can´t open the seat. For some reason it´s just not popping. Other Zumas in town are working just fine so I´m starting to think it´s more than the cold. Has anyone ever had problems like this? I don´t know how to fix it and I can´t put any gas in, so I can´t ride :( Please help