Takamine GD93CE-NAT

I've bought this guitar for the reputation of Takamine.
The sound is great as expected: well balanced and rich of harmonics. With respect to another acoustic guitar I own, this Takamine GD93CE is way better in terms of overall sound quality and playability.
But what is very surprising and astonishing to me is the very poor finish of the neck where I've found several hard fouling which resisted to a good cleaning with a guitar polish product.
Despite my experience in guitar crafting and spraying, I do not want to use sandpaper nor abrasive products.
At the end, even if the cosmetic issues do not compromise the great sound quality, I'm very disappointed by the lack of the quality standard of Takamine. Being made in China it is not surprising anyway...