I had a Hyosung GT-650R and had most of the same problems we are discussing, rear tire splitting, loose clutch, missing bolts, false neutral, dealer didn't honor warranty.
I ended up giving it away to a friend that uses it to take up space in his garage.
Other than that, it is a nice looking bike.
I now own a Kawasaki ZZR 600, had it about 4 months, no problems, way more bike. Just a little more change. You get what you pay for.