Yes kilgore trout - it's a very poor balance between grid-fill and endgame.
If I could get the 6 capitals you've found I'd happily leave it there, so could you please explain in a bit more detail how you find them?
I've tried highlighting the coordinates you mention - down clues and answers - but I'm not seeing anything sensible (I'm assuming the native language for there to be 6 letters?).
I get very close to an outline of the country by putting a dot in the squares given by the down clue coordinates and joining them up (and even then there are a couple of strays). It's the clue answers that I'm really struggling with.