CLK 550 Cabriolet (209.472) V8-5.5L (273.967) (2007)
1. Expose spot welds and cut out with spot weld cutter (area A).
2. Remove B-pillar reinforcement.
3. Then grind connection surfaces to bare metal in shaded areas.
4. Remove grinding and drilling chips using wet/dry vacuum cleaner.
5. Coat shaded areas with zinc dust paint.