Thanks again, Simon. After doing some maintenance toy other guitars, I decided not to bother too much with Dora and only changed the strings. I think it helped a lot with the buzzing, and and whatever is left is on an area of the fretboard that I won't use too much.

I think the springs that came with the Floyd Rose were for high tension because only two of them pulled too much, but now with thicker strings, I put the three of them and it's well balanced.

In some distant future, I may get a luthier to carve the body a bit to reach the highest frets, because at the moment, they are very deep in the body. However, I'm happy for the moment and if I need to play very high notes, I may just use one of my 6-strings.

It's been a fun journey.