I removed the right door from the fuselage and made the first rough trim of the window opening and overall perimeter. I measured the door perimeter for further trimming. I drilled out numerous holes for the door latch mechanism. I filled the numerous cleco mounting holes on the right side cabin top with a slurry mix. I removed the left door and reinstalled the center door latch mechanism and cover plate. I meased and trimmed the cover plate. I also applied a thin coat of slurry to the cover plate.