日本語 Japanese Ask Questions Thread 4

If you have a question about the language, ask it and fellow 4channers might see it and answer it for you.


Japanese Ask Questions Thread2
http://dis.4chan.org/read/lang/1206158123/1-40

Japanese Ask Questions Thread3
http://dis.4chan.org/read/lang/1267485093/1-40

I am a linguist seeking to deepen my knowledge of Japanese, I am not doing this for work, as I am currently working on Arabic, but just for fun.
I was wondering if there are any good books/sites for studying Japanese grammar aimed at linguists, I have tried several books already and was very disappointed, as both terminology and definitions were inaccurate to say the least.

Latest suggestion I found was the Genki series, which seems very disappointing, I feel like I wasted my time after going through the first book.