1. Open the trunk lid to adjust the rubber degree of the two threads, clockwise inward and counterclockwise outward, so that the seam edge can be adjusted in some details and adjusted appropriately according to the clearance.
2. Hold the trunk lid with both hands and pull it. When the trunk lid seems to be closed, apply a moderate force on the edge of the gap. The strength depends on the deviation and can be repeated until it is satisfactory, so as to prevent overcorrection.