I have about 40 hard hours on mine. I love the bike, and haven't had any major problems that weren't inflicted from crashes. All my issues have been little things like guards, guides, etc.
My bike looks super rough and beat up... But, hey it's a race bike.
The rundown so far is:
Fork seal started leaking after my 2nd ride
Aluminum fork guard bolts break (I've gone through 3. Not sure if they're 1st turn impacts or rocks/ruts shearing them off...)
Rear disk guard fell off. Bolts weren't tight from the factory.
Rear chain guide got mangled on a rock or a rut. Replaced with an Acerbis one.
Broke my RH shroud when I hooked my boot on it.
Water pump guard is only held on by one bolt. The thing keeps twisting up from roost/ruts. After a moto it is always sideways. Ended up drilling and safety wiring it to the frame to keep it straight finally.
She needs some TLC before this season starts ?