Long time without updates... but this weekend managed to work on the car for a couple of hours. Didn’t manage to make any substantially "visible" work. I worked on the right side of the car, basically sanding down the door and it's surroundings, trying to even things out, which hasn't been an easy task. Still, this couple of hours sanding down produced some nice results, and things now start to look smooth, without "low" and "high". Next time will do a major step towards an almost perfect smooth surface on the right door area; spray it with a cheap black paint and the light sand it. Doing this, I can easily find out where are the "low" and "high" spots.