At the company I work for our 2002 gem car 4 seater is having issues with the parking brake. When the parking brake is engaged it can still be moved. I have the 2001-2004 gem car owners manual and in that manual it shows that the tension adjuster should be under the rear seats. I removed the rear seat cushion but could not locate the tension adjuster. Any insight as to how to adjust the parking brake would be greatly appreciated. Thanks.