Hello!
Here is a thread with some of the bikes issues-> https://www.790dukeforum.com/forum/113-ktm-790-duke-general-discussion/108-issues.html
You can also go see my review(yout. channel in signature) and read other reviews here in the forum-> https://www.790dukeforum.com/forum/177-2018-ktm-790-duke-reviews/
Hope this helps. Cheers!