Hello dear friends of model making. After several attempts I managed to finish the bow, I think it should be 4.0 or so. Yes, I had my problems but I was able to achieve a reasonably good result. My first attempt was a few months ago and it was actually not bad, but I sanded it according to the instructions and probably a bit too much in the upper area. As I said, after a few attempts I was wiser. As I now know, it was not the sanding but the fitting of the individual parts, which in turn have no glue markings, and that was my problem as it now turned out. I also fixed the keelson and started with the limberboard (1x1mm), the inner planking will follow in the next few days.